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Matsuzaki K, Hayashi S, Nakanishi W. Origin of 17O NMR chemical shifts based on molecular orbital theory: paramagnetic terms of the pre-α, α and β effects from orbital-to-orbital transitions, along with the effects from vinyl, carbonyl and carboxyl groups. RSC Adv 2024; 14:14340-14356. [PMID: 38690112 PMCID: PMC11060305 DOI: 10.1039/d4ra00843j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/24/2024] [Indexed: 05/02/2024] Open
Abstract
17O NMR chemical shifts (δ(O)) were analysed based on the molecular orbital (MO) theory, using the diamagnetic, paramagnetic and total absolute magnetic shielding tensors (σd(O), σp(O) and σt(O), respectively). O2- was selected as the standard for the analysis. An excellent relationship was observed between σd(O) and the charges on O for O6+, O4+, O2+, O0 and O2-. The data from H2O, HO+, HO- and H3O+ were on the correlation line. However, such relationship was not observed for the oxygen species, other than above. The pre-α, α and β effects were evaluated bases on σt(O), where the pre-α effect arises from the protonation to a lone pair orbital on O2-, for an example. The 30-40 ppm and 20-40 ppm (downfield shifts) were predicted for the pre-α and β effects, respectively, whereas the values for the α effect was very small in magnitude, where the effect from the hydrogen bond formation should be considered. Similarly, the carbonyl effect in H2C[double bond, length as m-dash]O and the carboxyl effects in H(HO)C[double bond, length as m-dash]O were evaluated from MeOH, together with H2C[double bond, length as m-dash]CHOH from CH3CH2OH. Very large downfield shifts of 752, 425 and 207 ppm were predicted for H2C[double bond, length as m-dash]O*, H(HO)C[double bond, length as m-dash]O* and H(HO*)C[double bond, length as m-dash]O, respectively, together with the 81 ppm downfield shift for H2C[double bond, length as m-dash]CHO*H. The origin of the effect were visualized based on the occupied-to-unoccupied orbital transitions. As a result, the origin of the 17O NMR chemical shifts (δ(17O)) can be more easily imaged and understand through the image of the effects. The results would help to understand the role of O in the specific position of a compound in question and the mechanisms to arise the shift values also for the experimental scientists. The aim of this study is to establish the plain rules founded in theory for δ(17O), containing the origin, which has been achieved through the treatments.
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Affiliation(s)
- Keigo Matsuzaki
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
| | - Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
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Nishide T, Nakanishi W, Hayashi S. Intrinsic dynamic and static natures of APn--X +-- BPn σ(3c-4e) type interactions ( APn = BPn = N, P, As and Sb; X = H, F, Cl, Br and I) in bicyclo[3.3.3] and bicyclo[4.4.4] systems and their behaviour, elucidated with QTAIM dual functional analysis. RSC Adv 2024; 14:5675-5689. [PMID: 38357033 PMCID: PMC10865089 DOI: 10.1039/d3ra08926f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 01/09/2024] [Indexed: 02/16/2024] Open
Abstract
The intrinsic dynamic and static natures of APn--X+--BPn (APn = BPn: N, P, As and Sb; X = H, F, Cl, Br and I) in 1a+-8c+ were elucidated with the quantum theory of atoms-in-molecules dual functional analysis (QTAIM-DFA). Species 1a+-8c+ were formed by incorporating X+ between APn and BPn of APn(CH2CH2CH2)3BPn (1-4) and APn(CH2CH2CH2CH2)3BPn (5-8). The relative stabilities between the symmetric and nonsymmetric structures along with their transition states were investigated. Various natures from typical hydrogen bonds (t-HB) to classical covalent bonds were predicted for the APn-X/BPn-X interactions in APn--X+--BPn with QTAIM-DFA. The secondary interactions of H-H and X-C were also detected. The vdW to molecular complexes through charge transfer natures were predicted for them. Natural bond orbital analysis clarified that the CT terms were caused by not only n(APn)→ σ*(X-BPn) but also σ(APn-C)→σ*(X-BPn), σ(APn-C/BPn-C)→np(X+) and n(X)→ns(Pn+). The direction and magnitude of the p-character of n(APn) were the factors that determined the types of donor-acceptor interactions. Estimating the order of the interaction strengths was attempted. The σ(3c-4e) characters of APn--X+--BPn were also examined by analysing the charge distributions on APn--X+--BPn. These results would provide fundamentally important insight into designing molecules with high functionality containing X+ in symmetric and nonsymmetric structures.
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Affiliation(s)
- Taro Nishide
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
| | - Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
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Hayashi S, Kato T, Sugibayashi Y, Nakanishi W. Dynamic and Static Nature of XH-∗-π and YX-∗-π (X = F, Cl, Br, and I; Y = X and F) in the Distorted π-System of Corannulene Elucidated with QTAIM Dual Functional Analysis. Molecules 2023; 28:molecules28104219. [PMID: 37241959 DOI: 10.3390/molecules28104219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/28/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
The dynamic and static nature of the XH-∗-π and YX-∗-π (X = F, Cl, Br, and I; Y = X and F) interactions in the distorted π-system of corannulene (π(C20H10)) is elucidated with a QTAIM dual functional analysis (QTAIM-DFA), where asterisks emphasize the presence of bond critical points (BCPs) on the interactions. The static and dynamic nature originates from the data of the fully optimized and perturbed structures, respectively, in QTAIM-DFA. On the convex side, H in F-H-∗-π(C20H10) and each X in Y-X-∗-π(C20H10) join to C of the central five-membered ring in π(C20H10) through a bond path (BP), while each H in X-H-∗-π(C20H10) does so to the midpoint of C=C in the central five-membered ring for X = Cl, Br, or I. On the concave side, each X in F-X-∗-π(C20H10) also joins to C of the central five-membered ring with a BP for X = H, Cl, Br, and I; however, the interactions in other adducts are more complex than those on the convex side. Both H and X in X-H-∗-π(C20H10) (X = Cl and Br) and both Fs in F-F-∗-π(C20H10) connect to the three C atoms in each central five-membered ring (with three BPs). Two, three, and five BPs were detected for the Cl-Cl, I-H, Br-Br, and I-I adducts, where some BPs do not stay on the central five-membered ring in π(C20H10). The interactions are predicted to have a vdW to CT-MC nature. The interactions on the concave side seem weaker than those on the convex side for X-H-∗-π(C20H10), whereas the inverse trend is observed for Y-X-∗-π(C20H10) as a whole. The nature of the interactions in the π(C20H10) adducts of the convex and concave sides is examined in more detail, employing the adducts with X-H and F-X placed on their molecular axis together with the π(C24H12) and π(C6H6) adducts.
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Affiliation(s)
- Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Takahiro Kato
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Yuji Sugibayashi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
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Nakanishi W, Matsushita Y, Takeuchi M, Sagisaka K. Dipole-moment-induced supramolecular assembly of a donor-acceptor-type molecule on a metal surface and in a crystal. Phys Chem Chem Phys 2023; 25:13702-13707. [PMID: 37158041 DOI: 10.1039/d2cp05982g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The conformation and alignment of molecules in organic materials are important because they affect the materials' bulk physical properties. Because two-dimensional (2D) materials offer a simpler model of three-dimensional (3D) materials, the conformation and alignment of molecules in 2D assemblies have been investigated at the atomic scale by scanning tunnelling microscopy (STM). However, differences in the conformation and alignment of molecules between 2D and 3D assemblies have not been clarified. In this work, the conformation and alignment of a donor-acceptor-type molecule, 4-(3,3-dimethyl-2,3-dihydro-1H-indol-1-yl)benzonitrile (IBN), are studied in 2D and 3D assemblies. Thus, the 2D assembly of IBN on the Au(111) surface was investigated by STM and the 3D assembly of IBN in a single crystal was investigated by X-ray crystallography. Our survey revealed that the conformation of IBN is planar in both 2D and 3D assemblies because of the electron-delocalised structure resulting from the electron-donating and electron-accepting groups of IBN; thus, the values of the dipole moment of IBN in 2D and 3D assemblies are essentially the same. In both the 2D and 3D assemblies, IBN molecules align to cancel out the dipole moment even though the self-assembled structures differ. In the 2D assemblies, the orientation and self-assembled structure of IBN are changed by the surface density of IBN, and they are affected by the crystal orientation and superstructure of Au(111) because of the strong interaction between IBN and Au(111). In addition, scanning tunnelling spectroscopy revealed that the coordination structure is not included in the self-assembled structure of IBN on Au(111).
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Affiliation(s)
- W Nakanishi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
| | - Y Matsushita
- Research Network and Facility Services Division, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - M Takeuchi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
- Department of Materials Science and Engineering, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - K Sagisaka
- Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
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Kato S, Kimura M, Komatsu Y, Miyagawa K, Ishida M, Ebihara M, Niyomura O, Nakanishi W, Hayashi S. Synthesis, structures and reactions of acylsulfenyl iodides with theoretical investigations. RSC Adv 2023; 13:12035-12049. [PMID: 37077270 PMCID: PMC10108833 DOI: 10.1039/d3ra00646h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 04/10/2023] [Indexed: 04/21/2023] Open
Abstract
A series of acylsulfenyl iodides (RCOSI) were synthesized by the reactions of carbothioic acid group 11-16 element derivatives with iodine or N-iodosuccinimides in moderate to good yields. The structure of the PhCOSI was nearly square planar based on the X-ray analysis, where the C[double bond, length as m-dash]O⋯I distance (3.153(5) Å) was significantly shorter than the sum of the van der Waals radii of the atoms (Σr vdW), indicating close contact within the molecule. The distances between an iodine atom and the neighbouring two iodine atoms were also less than Σr vdW, perhaps due to the energy lowering effect of the interactions. The acylsulfenyl iodides readily reacted with alkenes and alkynes to give the expected addition products in moderate to good yields at approximately 0 °C. A new synthesis of acylated sulfines, sulfenamides and sulfenochalcogenides using acylsulfenyl iodides is also described. Theoretical calculations were performed on PhCOSI with the Sapporo-TZP(+1s1p) basis sets at the MP2 level, which perfectly reproduced the observed structures. Similar calculations were performed on the reactions, exemplified by those of MeCOSI and CH2[double bond, length as m-dash]CH2, together with those of MeSI and CH2[double bond, length as m-dash]CH2. Mechanisms for both reactions were proposed, which were very similar. The proposed mechanism for the former was understood based on that of the latter. For both mechanisms, the episulfuranes and episulfonium ions played an important role. The dynamic and static nature of the bonds in the COSI group of PhCOSI and MeCOSI were elucidated based on QTAIM dual functional analysis.
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Affiliation(s)
- Shinzi Kato
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Masahiro Kimura
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Yukio Komatsu
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Kenji Miyagawa
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Masaru Ishida
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Masahiro Ebihara
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Osamu Niyomura
- Department of Applied Chemistry, College of Engineering, Chubu University 1200 Matsumoto-cho Kasugai 487-8501 Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
| | - Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
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Nakanishi W, Hayashi S, Imanaka R, Nishide T, Tanaka E, Matsuoka H. Inverse Versus Normal Behavior of Interactions, Elucidated Based on the Dynamic Nature with QTAIM Dual-Functional Analysis. Int J Mol Sci 2023; 24:ijms24032798. [PMID: 36769120 PMCID: PMC9917772 DOI: 10.3390/ijms24032798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 02/05/2023] Open
Abstract
In QTAIM dual-functional analysis, Hb(rc) is plotted versus Hb(rc) - Vb(rc)/2 for the interactions, where Hb(rc) and Vb(rc) are the total electron energy densities and potential energy densities, respectively, at the bond critical points (BCPs) on the interactions in question. The plots are analyzed by the polar (R, θ) coordinate representation for the data from the fully optimized structures, while those from the perturbed structures around the fully optimized structures are analyzed by (θp, κp). θp corresponds to the tangent line of the plot, and κp is the curvature; θ and θp are measured from the y-axis and y-direction, respectively. The normal and inverse behavior of interactions is proposed for the cases of θp > θ and θp < θ, respectively. The origin and the mechanism for the behavior are elucidated. Interactions with θp < θ are typically found, although seldom for [F-I-∗-F]-, [MeS-∗-TeMe]2+, [HS-∗-TeH]2+ and CF3SO2N-∗-IMe, where the asterisks emphasize the existence of BCPs in the interactions and where [Cl-Cl-∗-Cl]- and CF3SO2N-∗-BrMe were employed as the reference of θp > θ. The inverse behavior of the interactions is demonstrated to arise when Hb(rc) - Vb(rc)/2 and when the corresponding Gb(rc), the kinetic energy densities at BCPs, does not show normal behavior.
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Affiliation(s)
- Waro Nakanishi
- Correspondence: (W.N.); (S.H.); Tel.: +81-73-457-8252 (W.N. and S. H.)
| | - Satoko Hayashi
- Correspondence: (W.N.); (S.H.); Tel.: +81-73-457-8252 (W.N. and S. H.)
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Hayashi S, Nishide T, Matsuoka H, Imanaka R, Nakanishi W. Proposal of Pseudo-intrinsic Dynamic Nature of Interactions: Simple Methods to Predict the Nature of High Reliability with the Applications. ARKIVOC 2022. [DOI: 10.24820/ark.5550190.p011.883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Hayashi S, Nishide T, Nagata K, Nakanishi W. Linear Multiselenium Interactions in Dicationic Oligomers of 1,5-(Diselena)canes: Behavior of Se mc σ(m c c-n e e) (6≤m c ≤16) Elucidated with QTAIM Dual Functional Analysis. ChemistryOpen 2021; 10:655. [PMID: 34197696 DOI: 10.1002/open.202100118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Invited for this month's cover picture is the group of Dr. Satoko Hayashi at Faculty of Systems Engineering and Chemistry at Wakayama University. The cover picture shows the linear Se16 σ(16c-30e) interactions, illustrated by the molecular graph type on the optimized structure of the dicationic octamer of 1,5-(diselena)cane. HOMO-1 of ψ462 is drawn on the structure, which is located predominantly on the Se atoms. The optimized structure is stable, due to the nice engagement between the (CH2 )3 moieties. The contour maps of ρ(r) are also drawn on the molecular Cs planes of the dicationic dimer and trimer to demonstrate clearly the existence of the interactions between Se atoms. Read the full text of their Full Paper at 10.1002/open.202100017.
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Affiliation(s)
- Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan
| | - Taro Nishide
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan
| | - Kengo Nagata
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan
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Hayashi S, Nishide T, Nagata K, Nakanishi W. Linear Multiselenium Interactions in Dicationic Oligomers of 1,5-(Diselena)canes: Behavior of Se mc σ(m c c-n e e) (6≤m c ≤16) Elucidated with QTAIM Dual Functional Analysis. ChemistryOpen 2021; 10:656-665. [PMID: 33934565 PMCID: PMC8248919 DOI: 10.1002/open.202100017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/11/2021] [Indexed: 12/02/2022] Open
Abstract
The intrinsic dynamic and static nature mc center-ne electron interactions of the σ-type σ(mc c-ne e) were elucidated for the Se-Se interactions in dicationic oligomers of Se(CH2 CH2 CH2 )2 Se (1 (Se, Se)) [n2+ (Se, Se): n=1-8], especially for mc ≥6, where n2+ (Se, Se: n=1-8) are abbreviated by n2+ (n=1-8), respectively. QTAIM dual functional analysis (QTAIM-DFA) was applied to the interactions. Perturbed structures generated using coordinates derived from the compliance constants (Cii ) were employed for QTAIM-DFA. Each Se-*-Se in 12+ and 22+ has the nature of CT-TBP (trigonal bipyramidal adduct formation through CT) and Cov-w (weak covalent), respectively, which supply the starting points of the investigations. The asterisk emphasizes the existence of a bond critical point on the interaction. All Se-*-Se in 32+ are classified by the regular closed shell (r-CS) interactions and characterized as CT-MC (molecular complex formation through CT), which are denoted as r-CS/CT-MC, except for the central interaction, of which nature is r-CS/CT-TBP. Most interactions in 42+ -82+ are r-CS/t-HBwc (typical-HB with covalency) but some are pure-CS/t-HBnc (t-HB with no covalency). The linear Se2n 2+ interactions in 22+ -82+ seem close to those without any limitations, since the nature of Se-*-Se inside and outside of (CH2 CH2 CH2 )2 are very similar with each other. The linear Se2n 2+ interactions in 32+ -82+ are shown to be analyzed as σ(mc c-ne e: 6≤mc ≤16), not by the accumulated σ(3c-4e).
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Grants
- 17K05785 Ministry of Education, Culture, Sports, Science, and Technology, Japan
- Ministry of Education, Culture, Sports, Science, and Technology, Japan
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Affiliation(s)
- Satoko Hayashi
- Faculty of Systems EngineeringWakayama University930 SakaedaniWakayama640-8510Japan
| | - Taro Nishide
- Faculty of Systems EngineeringWakayama University930 SakaedaniWakayama640-8510Japan
| | - Kengo Nagata
- Faculty of Systems EngineeringWakayama University930 SakaedaniWakayama640-8510Japan
| | - Waro Nakanishi
- Faculty of Systems EngineeringWakayama University930 SakaedaniWakayama640-8510Japan
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Hayashi S, Nishide T, Tanaka E, Nakanishi W. Intrinsic Dynamic and Static Nature of Halogen Bonding in Neutral Polybromine Clusters, with the Structural Feature Elucidated by QTAIM Dual-Functional Analysis and MO Calculations. Molecules 2021; 26:2936. [PMID: 34069291 PMCID: PMC8157170 DOI: 10.3390/molecules26102936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/08/2021] [Accepted: 05/09/2021] [Indexed: 11/30/2022] Open
Abstract
The intrinsic dynamic and static nature of noncovalent Br-∗-Br interactions in neutral polybromine clusters is elucidated for Br4-Br12, applying QTAIM dual-functional analysis (QTAIM-DFA). The asterisk (∗) emphasizes the existence of the bond critical point (BCP) on the interaction in question. Data from the fully optimized structures correspond to the static nature of the interactions. The intrinsic dynamic nature originates from those of the perturbed structures generated using the coordinates derived from the compliance constants for the interactions and the fully optimized structures. The noncovalent Br-∗-Br interactions in the L-shaped clusters of the Cs symmetry are predicted to have the typical hydrogen bond nature without covalency, although the first ones in the sequences have the vdW nature. The L-shaped clusters are stabilized by the n(Br)→σ*(Br-Br) interactions. The compliance constants for the corresponding noncovalent interactions are strongly correlated to the E(2) values based on NBO. Indeed, the MO energies seem not to contribute to stabilizing Br4 (C2h) and Br4 (D2d), but the core potentials stabilize them, relative to the case of 2Br2; this is possibly due to the reduced nuclear-electron distances, on average, for the dimers.
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Affiliation(s)
- Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan; (T.N.); (E.T.)
| | | | | | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan; (T.N.); (E.T.)
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Sato S, Ooizumi A, Sakabe M, Funahashi K, Fujita W, Hayashi S, Nakanishi W. Synthesis and Characterization of Monomeric Hexacoordinated Chalcogenonium Salts Bearing 2-(2-Pyridyl)phenyl Ligands. BCSJ 2021. [DOI: 10.1246/bcsj.20200367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Soichi Sato
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan
| | - Akihisa Ooizumi
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan
| | - Masato Sakabe
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan
| | - Koh Funahashi
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan
| | - Wataru Fujita
- Faculty of Science and Technology, Seikei University, 3-3-1 Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan
| | - Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
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Hayashi S, Nishide T, Nakanishi W. Dynamic and Static Nature of Br 4 σ(4c-6e) and Se 2Br 5 σ(7c-10e) in the Selenanthrene System and Related Species Elucidated by QTAIM Dual Functional Analysis with QC Calculations. Bioinorg Chem Appl 2020; 2020:2901439. [PMID: 32774351 PMCID: PMC7396019 DOI: 10.1155/2020/2901439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 06/15/2019] [Accepted: 11/19/2019] [Indexed: 11/18/2022] Open
Abstract
The nature of Br4 σ(4c-6e) of the BBr-∗-ABr-∗-ABr-∗-BBr form is elucidated for SeC12H8(Br)SeBr---Br-Br---BrSe(Br)C12H8Se, the selenanthrene system, and the models with QTAIM dual functional analysis (QTAIM-DFA). Asterisks (∗) are employed to emphasize the existence of bond critical points on the interactions in question. Data from the fully optimized structure correspond to the static nature of interactions. In our treatment, data from the perturbed structures, around the fully optimized structure, are employed for the analysis, in addition to those from the fully optimized one, which represent the dynamic nature of interactions. The ABr-∗-ABr and ABr-∗-BBr interactions are predicted to have the CT-TBP (trigonal bipyramidal adduct formation through charge transfer) nature and the typical hydrogen bond nature, respectively. The nature of Se2Br5 σ(7c-10e) is also clarified typically, employing an anionic model of [Br-Se(C4H4Se)-Br---Br---Br-Se(C4H4Se)-Br]-, the 1,4-diselenin system, rather than (BrSeC12H8)Br---Se---Br-Br---Br-Se(C12H8Se)-Br, the selenanthrene system.
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Affiliation(s)
- Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Taro Nishide
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
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Nakanishi W, Hayashi S, Nishide T. Intrinsic dynamic and static nature of each HB in the multi-HBs between nucleobase pairs and its behavior, elucidated with QTAIM dual functional analysis and QC calculations. RSC Adv 2020; 10:24730-24742. [PMID: 35516213 PMCID: PMC9055173 DOI: 10.1039/d0ra01357a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 06/22/2020] [Indexed: 11/21/2022] Open
Abstract
The intrinsic dynamic and static nature of each HB in the multi-HBs between nucleobase pairs (Nu-Nu') is elucidated with QTAIM dual functional analysis (QTAIM-DFA). Perturbed structures generated using coordinates derived from the compliance constants (C ii ) are employed for QTAIM-DFA. The method is called CIV. Two, three, or four HBs are detected for Nu-Nu'. Each HB in Nu-Nu' is predicted to have the nature of CT-TBP (trigonal bipyramidal adduct formation through charge transfer (CT)), CT-MC (molecular complex formation through CT), or t-HBwc (typical HB with covalency), while the vdW nature is predicted for the C-H⋯X interactions, for example. Energies for the formation of the pairs (ΔE) are linearly correlated with the total values of C ii -1 in Nu-Nu'. The total C ii -1 values are obtained by summing each C ii -1 value, similarly to the case of Ohm's law for the parallel connection in the electric resistance. The total ΔE value for a nucleobase pair could be fractionalized to each HB, based on each C ii -1 value. The perturbed structures generated with CIV are very close to those generated with the partial optimization method, when the changes in the interaction distances are very small. The results provide useful insights for better understanding DNA processes, although they are highly enzymatic.
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Affiliation(s)
- Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8252
| | - Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8252
| | - Taro Nishide
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8252
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Hayashi S, Nishide T, Ueda K, Hayama K, Nakanishi W. Effects from Basis Sets and Levels of Calculations on the Nature of Interactions Predicted by QTAIM Dual Functional Analysis with QTAIM Functions. ChemistrySelect 2019. [DOI: 10.1002/slct.201900998] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Satoko Hayashi
- Faculty of Systems EngineeringWakayama University, 930 Sakaedani Wakayama 640-8510 (Japan)
| | - Taro Nishide
- Faculty of Systems EngineeringWakayama University, 930 Sakaedani Wakayama 640-8510 (Japan)
| | - Kazuki Ueda
- Faculty of Systems EngineeringWakayama University, 930 Sakaedani Wakayama 640-8510 (Japan)
| | - Koki Hayama
- Faculty of Systems EngineeringWakayama University, 930 Sakaedani Wakayama 640-8510 (Japan)
| | - Waro Nakanishi
- Faculty of Systems EngineeringWakayama University, 930 Sakaedani Wakayama 640-8510 (Japan)
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Hayashi S, Nishide T, Nakanishi W. Nature of intramolecular O-H⋯π interactions as elucidated by QTAIM dual functional analysis with QC calculations. RSC Adv 2019; 9:15521-15530. [PMID: 35514837 PMCID: PMC9064312 DOI: 10.1039/c9ra01788g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/09/2019] [Indexed: 11/21/2022] Open
Abstract
The intrinsic dynamic and static nature of intramolecular OH-*-π interactions is elucidated using a QTAIM dual functional analysis (QTAIM-DFA) after clarifying the structural features. Asterisks (*) are employed to emphasize the presence of bond critical points (BCPs) on the bond paths (BPs), which correspond to the interactions in question. Data from the fully optimized structures correspond to the static nature of the interactions. In our treatment, data from the perturbed structures, which are based around the fully optimized structure, are employed for the analysis in addition to those from the fully optimized structure, which represent the dynamic nature of the interaction. Seven intramolecular OH-*-C(π) interactions were detected in six-membered rings, with six BPs and BCPs for each, among the 72 conformers of the species examined here (1-15). The interactions are predicted to have a vdW or t-HBnc (typical hydrogen bonds with no covalency) nature, which appeared in the pure closed shell region. They appear to be stronger than the corresponding intermolecular interactions. Nine BPs with BCPs were also detected for the intramolecular O-*-X interactions (X = C(π) and H(π), joined to C(π)) in the 5-7-membered rings. The E(2) values of the interactions, as obtained by NBO, are discussed in relation to the stabilities of the conformers and the BPs with BCPs.
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Affiliation(s)
- Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
| | - Taro Nishide
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
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Hayashi S, Nishide T, Nakanishi W. Behavior of Multi-HBs in Acetic Acid Dimer and Related Species: QTAIM Dual Functional Analysis Employing Perturbed Structures Generated Using Coordinates from Compliance Force Constants. BCSJ 2019. [DOI: 10.1246/bcsj.20180186] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Taro Nishide
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
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Hayashi S, Uegaito M, Nishide T, Tanaka E, Nakanishi W, Sasamori T, Tokitoh N, Minoura M. Nature of the E⋯E′ interactions (E, E′ = O, S, Se, and Te) at naphthalene 1,8-positions with fine details of the structures: experimental and theoretical investigations. NEW J CHEM 2019. [DOI: 10.1039/c9nj02198a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The nature of E⋯E′ in 1-RE–8-R′E′C10H6 (E/E′ = O, S, Se and Te) is clarified with the QTAIM approach and NBO analysis, after structural determinations.
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Affiliation(s)
- Satoko Hayashi
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Manabu Uegaito
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Taro Nishide
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Eiichiro Tanaka
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Takahiro Sasamori
- Graduate School of Natural Sciences
- Nagoya City University
- Nagoya
- Japan
| | | | - Mao Minoura
- Department of Chemistry
- College of Science
- Rikkyo University
- Tokyo
- Japan
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Hayashi S, Nishide T, Nakanishi W, Sancineto L, Santi C. The nature of G⋯E–Y σ(3c–4e) in o-Me nGCH 2C 6H 4EY (Me nG = Me 2N and MeE; E = O, S, Se and Te; Y = F, Cl, Br, EMe and Me) with contributions from CT and compliance constants in noncovalent G⋯E interactions. RSC Adv 2019; 9:39435-39446. [PMID: 35540683 PMCID: PMC9076098 DOI: 10.1039/c9ra09022c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 11/20/2019] [Indexed: 12/15/2022] Open
Abstract
The intrinsic dynamic and static nature of G–*–E–*–Y σ(3c–4e) interactions was elucidated with the quantum theory of atoms in molecules dual functional analysis (QTAIM-DFA), employing o-MenGCH2C6H4EY (MenG = Me2N and MeE; E = O, S, Se and Te; Y = F, Cl, Br, I, EMe and Me). Asterisks (*) are employed to emphasize the existence of bond critical points (BCPs) on the bond paths (BPs), corresponding to the interactions in question. Data from the fully optimized structure correspond to the static nature of interactions. The dynamic nature is called the intrinsic dynamic nature if the perturbed structures are generated using the coordinates derived from the compliance constants. Basis sets of the Sapporo-TZP type with diffusion functions are employed for the heteroatoms at the MP2 level. The noncovalent G–*–E interactions in GEY σ(3c–4e) are predicted to demonstrate van der Waals bonding to CT-TBP (trigonal bipyramidal adduct formation through charge transfer) nature, while the E–*–Y bonds have the covalent nature. Some E–F bonds show strong ionic character when G–*–E is predicted to be stronger than E–*–Y. The contributions of the CT terms to the G–*–E interactions, evaluated with NBO, are discussed in relation to the predicted nature. The E(2) values based on NBO are strongly correlated to the compliance constants for the G–*–E interactions if suitably treated separately. The nature of E⋯E′ in 1-RECH2-2-R′E′C6H4 (E/E′ = O, S, Se and Te) is clarified with QTAIM approach and NBO analysis, after structural determinations.![]()
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Affiliation(s)
| | - Taro Nishide
- Faculty of Systems Engineering
- Wakayama University
- Japan
| | | | - Luca Sancineto
- Organic Chemistry Section
- Center of Molecular and Macromolecular Studies
- Polish Academy of Sciences
- Lódz
- Poland
| | - Claudio Santi
- Dipartimento di Chimica e Tecnologia del Farmaco
- Università degli Studi di Perugia
- Italy
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Miyagi S, Nakanishi C, Hara Y, Nakanishi W, Tokodai K, Shimizu K, Uematsu S, Kumata H, Kakizaki Y, Goto M, Kamei T, Unno M, Satomi S. Correlation Between Splenectomy and Portal Vein Complications in Living Donor Liver Transplantation. Transplant Proc 2018; 50:2611-2613. [PMID: 30401361 DOI: 10.1016/j.transproceed.2018.03.104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 03/06/2018] [Indexed: 12/27/2022]
Abstract
OBJECTIVES In adults undergoing living donor liver transplantation (LDLT), the transplanted livers are partial grafts, and the portal venous pressure is higher than that observed with whole liver grafts. In patients undergoing LDLT concomitant with splenomegaly, portal venous flow is often diverted to collateral vessels, leading to a high risk of portal vein thrombosis. In such cases, occlusion of the collateral veins is important; however, complete occlusion of all collaterals without blocking the blood flow through the splenic artery causes portal hypertension and liver failure. We aimed to examine the effect of performing a splenectomy concomitant with LDLT to reduce portal vein complications. METHODS Between 1991 and 2017, we performed 170 LDLT operations, including 83 in adults. For this cohort study, adult cases were divided into 2 groups. Group I was those who underwent LDLT without splenectomy (n = 60); Group II was those who underwent LDLT with splenectomy for the reduction of portal hypertension (n = 23). We investigated the incident rates of complications, including blood loss, lethal portal vein thrombosis (intrahepatic thrombosis), acute rejection, and so on. We also investigated the survival rates in both groups. RESULTS The incident rate of lethal portal vein thrombosis in Group II was significantly lower than that observed in Group I (4.4% vs 21.7%, respectively, P = .0363). There were no statistically significant differences observed between the groups with respect to blood loss, survival rates, and other such parameters. CONCLUSION LDLT concomitant with splenectomy might effectively reduce the occurrence of portal vein complications in adults.
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Affiliation(s)
- S Miyagi
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan.
| | - C Nakanishi
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Y Hara
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - W Nakanishi
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - K Tokodai
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - K Shimizu
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - S Uematsu
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - H Kumata
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Y Kakizaki
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - M Goto
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - T Kamei
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - M Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - S Satomi
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
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Miyazawa K, Miyagi S, Nakanishi C, Hara Y, Tokodai K, Nakanishi W, Uematsu S, Shimizu K, Goto M, Kamei T, Unno M. Effect of Middle Hepatic Vein Tributaries Preserving Technique Until Just Before Graft Retrieval on Donors' Surgical Outcomes in Living Donor Liver Transplantation. Transplant Proc 2018; 50:2636-2639. [PMID: 30401365 DOI: 10.1016/j.transproceed.2018.03.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 03/02/2018] [Indexed: 11/15/2022]
Abstract
BACKGROUND The technique of preserving the major tributaries of the middle hepatic vein (MHV) (V5 and V8) until just before graft retrieval is beneficial to minimize congestion time of the graft. However, it remains unclear whether this technique exerts a burden on donors in terms of operative time, blood loss, and postoperative hepatic dysfunction. In this study we investigated adverse effects of the MHV tributaries preserving technique until immediately before graft retrieval on donors' surgical outcomes. METHODS Data from 71 donors who underwent right hepatectomy without MHV for a liver transplantation at our hospital from January 2002 to August 2016 were retrospectively reviewed. Donors were divided into 3 groups as follows: group 1 (n = 12), no MHV tributary reconstruction; group 2 (n = 33), single MHV tributary reconstruction; group 3 (n = 26), 2 or 3 MHV tributaries reconstruction. Donor operation time, blood loss, proportion of the remnant liver, maximum postoperative total bilirubin, aspartate aminotransferase, alanine transaminase, minimum platelets, prothrombin time, albumin level, number of days in hospital from surgery to discharge, and surgical complications were compared. RESULTS Compared with groups 2 and 3, group 1 exhibited shorter average operational time and less average blood loss, but the difference was not significant. Comparisons of all other factors indicated no significant differences. CONCLUSION The technique of preserving the major tributaries of the MHV until just immediately before graft retrieval does not appear to impose an apparent burden on donors.
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Affiliation(s)
- K Miyazawa
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
| | - S Miyagi
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - C Nakanishi
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Y Hara
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - K Tokodai
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan; Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - W Nakanishi
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - S Uematsu
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - K Shimizu
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - M Goto
- Transplantation and Regenerative Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - T Kamei
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - M Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
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Nishide T, Hayashi S, Nakanishi W. Front Cover: Intrinsic Dynamic Nature of Neutral Hydrogen Bonds Elucidated with QTAIM Dual Functional Analysis: Role of the Compliance Force Constants and QTAIM-DFA Parameters in Stability (ChemistryOpen 8/2018). ChemistryOpen 2018. [PMCID: PMC6077872 DOI: 10.1002/open.201800134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The Front Cover shows Japanese lanterns for the Bon festival dance dangling on two ropes, and several molecular graphs with contour maps for hydrogen bonds (HBs) emerging from the lanterns. The curves of the ropes may correspond to the ΔE (energy of formation) and Cij (compliance constant) values for HBs, for which the product will be constant. More information can be found in the Full Paper by T. Nishide et al on page 565 in Issue 8, 2018 (DOI: https://doi.org/10.1002/open.201800051).![]()
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Affiliation(s)
- Taro Nishide
- Wakayama University; Faculty of Systems Engineering; Wakayama Japan
| | - Satoko Hayashi
- Wakayama University; Faculty of Systems Engineering; Wakayama Japan
| | - Waro Nakanishi
- Wakayama University; Faculty of Systems Engineering; Wakayama Japan
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Nishide T, Hayashi S, Nakanishi W. Intrinsic Dynamic Nature of Neutral Hydrogen Bonds Elucidated with QTAIM Dual Functional Analysis: Role of the Compliance Force Constants and QTAIM-DFA Parameters in Stability. ChemistryOpen 2018; 7:565-575. [PMID: 30094124 PMCID: PMC6077874 DOI: 10.1002/open.201800051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Indexed: 12/24/2022] Open
Abstract
The dynamic and static nature of various neutral hydrogen bonds (nHBs) is elucidated with quantum theory of atoms-in-molecules dual functional analysis (QTAIM-DFA). The perturbed structures generated by using the coordinates derived from the compliance force constants (Cij ) of internal vibrations are employed for QTAIM-DFA. The method is called CIV. The dynamic nature of CIV is described as the "intrinsic dynamic nature", as the coordinates are invariant to the choice of the coordinate system. nHBs are, for example, predicted to be van der Waals (H2Se-✶-HSeH; ✶=bond critical point), t-HBnc (typical-HBs with no covalency: HI-✶-HI), t-HBwc (t-HBs with covalency: H2C=O-✶-HI), CT-MC [molecular complex formation through charge transfer (CT): H2C=O-✶-HF], and CT-TBP (trigonal bipyramidal adduct formation through CT: H3N-✶-HI) in nature. The results with CIV were the same as those with POM in the calculation errors, for which the perturbed structures were generated by partial optimization, and the interaction distances in question were fixed suitably in POM. The highly excellent applicability of CIV for QTAIM-DFA was demonstrated for the various nHBs, as well as for the standard interactions previously reported. The stability of the HBs, evaluated by ΔE, is well correlated with Cij (ΔE×Cij =constant value of -165.64), and the QTAIM parameters, although a few deviations were detected.
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Affiliation(s)
- Taro Nishide
- Wakayama UniversityFaculty of Systems EngineeringWakayamaJapan
| | - Satoko Hayashi
- Wakayama UniversityFaculty of Systems EngineeringWakayamaJapan
| | - Waro Nakanishi
- Wakayama UniversityFaculty of Systems EngineeringWakayamaJapan
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Nishide T, Hayashi S, Nakanishi W. Intrinsic Dynamic Nature of Neutral Hydrogen Bonds Elucidated with QTAIM Dual Functional Analysis: Role of the Compliance Force Constants and QTAIM-DFA Parameters in Stability. ChemistryOpen 2018; 7:564. [PMID: 30094123 PMCID: PMC6077873 DOI: 10.1002/open.201800133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Invited for this month's cover picture is Professor Satoko Hayashi's group from the Faculty of Systems Engineering at Wakayama University (Japan). The cover picture shows Japanese lanterns for the Bon festival dance dangling on two ropes, and several molecular graphs with contour maps for hydrogen bonds (HBs) emerging from the lanterns. The curves of the ropes may correspond to the ΔE (energy of formation) and Cij (compliance constant) values for HBs, for which the product will be constant. Read the full text of their Full Paper at https://doi.org/10.1002/open.201800051.
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Affiliation(s)
- Taro Nishide
- Wakayama UniversityFaculty of Systems EngineeringWakayamaJapan
| | - Satoko Hayashi
- Wakayama UniversityFaculty of Systems EngineeringWakayamaJapan
| | - Waro Nakanishi
- Wakayama UniversityFaculty of Systems EngineeringWakayamaJapan
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Hayashi S, Sugibayashi Y, Nakanishi W. Behaviour of the XH-*-π and YX-*-π interactions (X, Y = F, Cl, Br and I) in the coronene π-system, as elucidated by QTAIM dual functional analysis with QC calculations. RSC Adv 2018; 8:16349-16361. [PMID: 35542236 PMCID: PMC9080335 DOI: 10.1039/c8ra01862f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 04/24/2018] [Indexed: 11/24/2022] Open
Abstract
The dynamic and static nature of XH-*-π and YX-*-π in the coronene π-system (π(C24H12)) is elucidated by QTAIM dual functional analysis, where * emphasizes the presence of bond critical points (BCPs) in the interactions. The nature of the interactions is elucidated by analysing the plots of the total electron energy densities H b(r c) versus H b(r c) - V b(r c)/2 [=(ħ 2/8m)∇2 ρ b(r c)] for the interactions at BCPs, where V b(r c) are the potential energy densities at the BCPs. The data for the perturbed structures around the fully optimized structures are employed for the plots in addition to those of the fully optimized structures. The plots are analysed using the polar coordinate of (R, θ) for the data of the fully optimized structures, while those containing the perturbed structures are analysed using (θ p, κ p), where θ p corresponds to the tangent line of each plot and κ p is the curvature. Whereas (R, θ) show the static nature, (θ p, κ p) represent the dynamic nature of the interactions. All interactions in X-H-*-π(C24H12) (X = F, Cl, Br and I) and Y-X-*-π(C24H12) (Y-X = F-F, Cl-Cl, Br-Br, I-I, F-Cl, F-Br and F-I) are classified by pure CS (closed shell) interactions and are characterized as having the vdW nature, except for X-H = F-H and Y-X = F-Cl, F-Br and F-I, which show the typical-HB nature without covalency. The structural features of the complexes are also discussed.
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Affiliation(s)
- Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
| | - Yuji Sugibayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
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Tsubomoto Y, Hayashi S, Nakanishi W, Mapp LK, Coles SJ. High-resolution X-ray diffraction determination of the electron density of 1-(8-PhSC 10H 6)SS(C 10H 6SPh-8')-1' with the QTAIM approach: evidence for S 4 σ(4c-6e) at the naphthalene peri-positions. RSC Adv 2018; 8:9651-9660. [PMID: 35540809 PMCID: PMC9078645 DOI: 10.1039/c7ra13636f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 02/20/2018] [Indexed: 12/18/2022] Open
Abstract
An extended hypervalent S4 σ(4c-6e) system was confirmed for the linear BS-∗-AS-∗-AS-∗-BS interaction in 1-(8-PhBSC10H6)AS-AS(C10H6 BSPh-8')-1' (1) via high-resolution X-ray diffraction determination of electron densities. The presence of bond critical points (BCPs; ∗) on the bond paths confirms the nature and extent of this interaction. The recently developed QTAIM dual functional analysis (QTAIM-DFA) approach was also applied to elucidate the nature of the interaction. Total electron energy densities H b( r c) were plotted versus H b( r c) - V b( r c)/2 for the interaction at the BCPs, where V b( r c) represents the potential energy densities at the BCP. The results indicate that although the data for an interaction in the fully optimized structure corresponds to a static nature, the data obtained for the perturbed structures around it represent the dynamic nature of the interaction in QTAIM-DFA. The former classifies the interaction and the latter characterises it. Although AS-∗-AS in 1 is classified by a shared shell interaction and exhibits weak covalent character, AS-∗-BS is characterized as having typical hydrogen-bond nature with covalent properties in the region of the regular closed shell interactions. The experimental results are supported by matching theoretical calculations throughout, particularly for the extended hypervalent E4 σ(4c-6e) (E = S) interaction.
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Affiliation(s)
- Yutaka Tsubomoto
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
| | - Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan +81 73 457 8253 +81 73 457 8252
| | - Lucy K Mapp
- Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton Southampton SO17 1BJ UK +44 (0)2380596721
| | - Simon J Coles
- Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton Southampton SO17 1BJ UK +44 (0)2380596721
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Miyagi S, Shimizu K, Miyazawa K, Nakanishi W, Hara Y, Tokodai K, Nakanishi C, Satomi S, Goto M, Unno M, Kamei T. A Case of Successful Simultaneous Pancreas-Kidney Transplantation Using the Injured Pancreas Graft. Transplant Proc 2017; 49:2315-2317. [PMID: 29198668 DOI: 10.1016/j.transproceed.2017.10.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Graft injuries sometimes occur and may cause complications such as the leakage of pancreatic secretions, which is often lethal. We report our experience of a case of successful simultaneous pancreas-kidney transplantation using injured pancreas graft. PATIENTS AND METHODS The recipient was a 57-year-old woman with type 1 diabetes mellitus, and the donor was a 30-year-old man with a brain injury. In the donation, the pancreas parenchyma, splenic artery, and gastroduodenal artery were injured iatrogenically. We therefore reconstructed these arteries using vessel grafts and then performed simultaneous pancreas-kidney transplantation. RESULTS Five days after transplantation, we noted a high titer of amylase in the ascites; therefore, we performed an urgent laparotomy. The origin of the amylase was the injured pancreatic parenchyma, and continued washing and drainage were carried out. We reconstructed the duodenojejunostomy using the Roux-en-Y technique to separate the passage of food from the pancreas graft to prevent injury to other organs due to exposure to pancreatic secretions. Thereafter, we inserted a decompression tube into the anastomosis thorough the blind end of the jejunum. Finally, we inserted 3 drainage tubes for lavage. Following this procedure, the patient recovered gradually and no longer required hemodialysis and insulin therapy. She was discharged from our hospital 56 days after transplantation. CONCLUSION The restoration of the injured graft was possible by management of pancreatic secretions and use of the donor's vessel grafts. Shortage of donors is a problem throughout the world; thus, it is important to use injured grafts for transplantation if possible.
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Affiliation(s)
- S Miyagi
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan.
| | - K Shimizu
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - K Miyazawa
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - W Nakanishi
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - Y Hara
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - K Tokodai
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - C Nakanishi
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - S Satomi
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - M Goto
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - M Unno
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
| | - T Kamei
- Department of Surgery, Tohoku University, Aoba-ku, Sendai, Japan
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Hayashi S, Nishide T, Nakanishi W, Saito M. Relativistic Effect on 1 J(M,C) in Me 4 M, Me 3 M - , Ph 4 M, and Ph 3 M - (M=Pb, Sn, Ge, Si, and/or C): Role of s-Type Lone Pair Orbitals in the Distinct Effect for the Anionic Species. Chemphyschem 2017; 18:2466-2474. [PMID: 28691742 DOI: 10.1002/cphc.201700755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 11/12/2022]
Abstract
Indirect one-bond nuclear spin-spin couplings between M and C [1 J(M,C)] in Me4 M, Me3 M- , Ph4 M, and Ph3 M- (M=Pb, Sn, Ge, Si, C) are analyzed with consideration of the relativistic effect and by employing Slater-type basis sets. The evaluated total values 1 JTL (M,C) reproduced the observed values with some systematic calculation errors. Fermi contact terms 1 JFC (M,C) contribute predominantly to 1 JTL (M,C) (≈99 %). A distinct relativistic effect on 1 J(Pb,C) is predicted for Me3 Pb- and Ph3 Pb- . The mechanisms for the distinct effect are elucidated by using the comparison between Me3 Pb- and Me4 Pb as an example. The contributions to 1 JFC (M,C) [or 1 JSD+FC (M,C), where SD denotes the spin-dipolar term] are decomposed into those of occupied orbitals and occupied-to-unoccupied transitions. The s-type lone-pair orbitals are demonstrated to contribute to the distinct relativistic effect on 1 J(Pb,C) of Me3 Pb- (and Ph3 Pb- ). The results are in sharp contrast to the cases of 1 J(M,C) for M atoms lighter than Pb, such as Si, and are explained by the s character of the M-C bonds. This treatment enables visualization and clear recognition the origin of the nuclear couplings for the species exhibiting a relativistic effect.
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Affiliation(s)
- Satoko Hayashi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan
| | - Taro Nishide
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan
| | - Masaichi Saito
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama-city, Saitama, 338-8570, Japan
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Tokodai K, Kawagishi N, Miyagi S, Nakanishi C, Hara Y, Nakanishi W, Kamei T, Ohuchi N. Splenectomy for Severe Intestinal Bleeding Caused by Portal Hypertensive Enteropathy After Pediatric Living-Donor Liver Transplantation: A Report of Three Cases. Transplant Proc 2017; 49:1129-1132. [DOI: 10.1016/j.transproceed.2017.03.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Mitrofan C, Gust T, Zanin A, Bîrzoi RM, Jones PG, du Mont W, Hayashi S, Nakanishi W, Marsmann HC. Dichlorosilylene Transfer to a
P
‐Fluorophosphaalkene: The Route to a
C
‐Dichlorofluorosilyl‐Functionalized Dialkyldiphosphene. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cristina Mitrofan
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Thorsten Gust
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Andreas Zanin
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Roxana M. Bîrzoi
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Wolf‐W. du Mont
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
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Hayashi S, Nagata K, Otsuki S, Nakanishi W. Linear Four-Chalcogen Interactions in Radical Cationic and Dicationic Dimers of 1,5-(Dichalcogena)canes: Nature of the Interactions Elucidated by QTAIM Dual Functional Analysis with QC Calculations. J Phys Chem A 2017; 121:2482-2496. [PMID: 28257204 DOI: 10.1021/acs.jpca.7b00667] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The dynamic and static nature of extended hypervalent interactions of the BE···AE···AE···BE type are elucidated for four center-seven electron interactions (4c-7e) in the radical cationic dimers (1·+) and 4c-6e in the dicationic dimers (12+) of 1,5-(dichalcogena)canes (2: AE(CH2CH2CH2)2BE: AE, BE = S, Se, Te, and O). The quantum theory of atoms-in-molecules dual functional analysis (QTAIM-DFA) is applied for the analysis. Total electron energy densities Hb(rc) are plotted versus Hb(rc) - Vb(rc)/2 [= (ℏ2/8m)∇2ρb(rc)] at bond critical points (BCPs) of the interactions, where Vb(rc) values show potential energy densities at BCPs. Data from the fully optimized structures correspond to the static nature of the interactions. Those from the perturbed structures around the fully optimized ones are also plotted, in addition to those of the fully optimized ones, which represent the dynamic nature of interactions. The BE···AE-AE···BE interactions in 12+ are stronger than the corresponding ones in 1·+, respectively. On the one hand, for 12+ with AE, BE = S, Se, and Te, AE···AE are all classified by the shared shell interactions and predicted to have the weak covalent nature, except for those in 1a2+ (AE = BE = S) and 1d2+ (AE = BE = Se), which have the nature of regular closed shell (r-CS)/trigonal bipyramidal adduct formation through charge transfer (CT-TBP). On the other hand, AE···BE are predicted to have the nature of r-CS/molecular complex formation through charge transfer for 1a2+, 1b2+ (AE = Se; BE = S), and 1d2+ or r-CS/CT-TBP for 1c2+ (AE = Te; BE = S), 1e2+ (AE = Te; BE = Se), and 1f2+ (AE = BE = Te). The BE···AE-AE···BE interactions in 1·+ and 12+ are well-analyzed by applying QTAIM-DFA.
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Affiliation(s)
- Satoko Hayashi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University , 930 Sakaedani, Wakayama 640-8510, Japan
| | - Kengo Nagata
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University , 930 Sakaedani, Wakayama 640-8510, Japan
| | - Shota Otsuki
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University , 930 Sakaedani, Wakayama 640-8510, Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University , 930 Sakaedani, Wakayama 640-8510, Japan
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Tsubomoto Y, Hayashi S, Nakanishi W, Sasamori T, Tokitoh N. Nature ofE2X2σ(4c–6e) of theX---E—E---Xtype at naphthalene 1,8-positions and model, elucidated by X-ray crystallographic analysis and QC calculations with the QTAIM approach. Acta Crystallogr B Struct Sci Cryst Eng Mater 2017; 73:265-275. [DOI: 10.1107/s205252061700364x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 03/07/2017] [Indexed: 11/10/2022]
Abstract
The nature ofE2X2σ(4c–6e) of theX-*-E-*-E-*-Xtype is elucidated for 1-(8-XC10H6)E–E(C10H6X-8′)-1′ [(1)E,X= S, Cl; (2) S, Br; (3) Se, Cl; (4) Se, Br] after structural determination of (1), (3) and (4), together with modelA[MeX---E(H)—E(H)---XMe (E= S and Se;X= Cl and Br)]. The quantum theory of atoms-in-molecules dual functional analysis (QTAIM-DFA) is applied. The total electron energy densitiesHb(rc) are plottedversus Hb(rc) –Vb(rc)/2 for the interactions at the bond critical points (BCPs; *), whereVb(rc) show the potential energy densities at the BCPs. Data for the perturbed structures around the fully optimized structures are employed for the plots, in addition to those of the fully optimized structures. The plots were analysed using the polar coordinate (R, θ) representation of the data of the fully optimized structures. Data containing the perturbed structures were analysed by (θp, κp), where θpcorresponds to the tangent line of the plot and κpis the curvature. Whereas (R, θ) shows the static nature, (θp, κp) represents the dynamic nature of interactions.E-*-Eare all classified as shared shell (S) interactions for (1)–(4) and as weak covalent (Cov-w) in nature (S/Cov-w). The nature ofpureCS (closed shell)/typical-HB (hydrogen bond) with no covalency is predicted forE-*-Xin (1) and (3),regularCS/typical-HB nature with covalency is predicted for (4), and an intermediate nature is predicted for (2). The NBO energies evaluated forE-*-Xin (1)–(4) are substantially larger than those in modelAdue the shortened length at the naphthalene 1,8-positions. The nature ofE2X2of σ(4c–6e) is well elucidatedviaQTAIM-DFA.
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Mitrofan C, Gust T, Zanin A, Bîrzoi RM, Jones PG, du Mont W, Hayashi S, Nakanishi W, Marsmann HC. Dichlorosilylene Transfer to a
P
‐Fluorophosphaalkene: The Route to a
C
‐Dichlorofluorosilyl‐Functionalized Dialkyldiphosphene. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601411] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cristina Mitrofan
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Thorsten Gust
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Andreas Zanin
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Roxana M. Bîrzoi
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
| | - Wolf‐W. du Mont
- Institut für Anorganische und Analytische Chemie der TU Braunschweig Braunschweig Germany
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Matsuiwa K, Hayashi S, Nakanishi W. Dynamic and Static Behavior of Intramolecular π-π Interactions in [2.2]- and [3.3]Cyclophanes, Elucidated by QTAIM Dual Functional Analysis with QC Calculations. ChemistrySelect 2017. [DOI: 10.1002/slct.201602047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kohei Matsuiwa
- Department of Material Science and Chemistry; Faculty of Systems Engineering, Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Satoko Hayashi
- Department of Material Science and Chemistry; Faculty of Systems Engineering, Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry; Faculty of Systems Engineering, Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
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Matsuiwa K, Sugibayashi Y, Tsubomoto Y, Hayashi S, Nakanishi W. Behavior of Intramolecular π-π Interactions with Doubly Degenerated Bond Paths Between Carbon Atoms in Opposite Benzene Rings of Diethenodihydronaphthalenes by QTAIM Approach. ChemistrySelect 2017. [DOI: 10.1002/slct.201601494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Kohei Matsuiwa
- Department of Material Science and Chemistry; Faculty of Systems Engineering; Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Yuji Sugibayashi
- Department of Material Science and Chemistry; Faculty of Systems Engineering; Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Yutaka Tsubomoto
- Department of Material Science and Chemistry; Faculty of Systems Engineering; Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Satoko Hayashi
- Department of Material Science and Chemistry; Faculty of Systems Engineering; Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry; Faculty of Systems Engineering; Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
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Hayashi S, Sugibayashi Y, Nakanishi W. Behavior of interactions between hydrogen chalcogenides and an anthracene π-system elucidated by QTAIM dual functional analysis with QC calculations. RSC Adv 2017. [DOI: 10.1039/c7ra04224h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The nature of the interactions between chalcogenides and the anthracene p-system, EH2-*-p(C14H10), is predicted to be close to that of EH2-*-p(C10H8), although the partial structures around the central rings can be found in EH2-*-p(C6H6).
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Affiliation(s)
- Satoko Hayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama
- 640-8510 Japan
| | - Yuji Sugibayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama
- 640-8510 Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama
- 640-8510 Japan
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Matsuiwa K, Hayashi S, Nakanishi W. Intramolecular π-π Interactions in Diethanodihydronaphthalene and Derivatives: Dynamic and Static Behavior of the Interactions Elucidated by QTAIM Dual Functional Analysis. ChemistrySelect 2016. [DOI: 10.1002/slct.201600429] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kohei Matsuiwa
- Department of Material Science and Chemistry; Faculty of Systems Engineering; Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Satoko Hayashi
- Department of Material Science and Chemistry; Faculty of Systems Engineering; Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry; Faculty of Systems Engineering; Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
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Sugibayashi Y, Hayashi S, Nakanishi W. Behavior of Halogen Bonds of the Y-X⋅⋅⋅π Type (X, Y=F, Cl, Br, I) in the Benzene π System, Elucidated by Using a Quantum Theory of Atoms in Molecules Dual-Functional Analysis. Chemphyschem 2016; 17:2579-89. [PMID: 27124373 DOI: 10.1002/cphc.201600227] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Indexed: 01/30/2023]
Abstract
The nature of halogen bonds of the Y-X-✶-π(C6 H6 ) type (X, Y=F, Cl, Br, and I) have been elucidated by using the quantum theory of atoms in molecules (QTAIM) dual-functional analysis (QTAIM-DFA), which we proposed recently. Asterisks (✶) emphasize the presence of bond-critical points (BCPs) in the interactions in question. Total electron energy densities, Hb (rc ), are plotted versus Hb (rc )-Vb (rc )/2 [=(ħ(2) /8m)∇(2) ρb (rc )] for the interactions in QTAIM-DFA, in which Vb (rc ) are potential energy densities at the BCPs. Data for perturbed structures around fully optimized structures were used for the plots, in addition to those of the fully optimized ones. The plots were analyzed by using the polar (R, θ) coordinate for the data of fully optimized structures with (θp , κp ) for those that contained the perturbed structures; θp corresponds to the tangent line of the plot and κp is the curvature. Whereas (R, θ) corresponds to the static nature, (θp , κp ) represents the dynamic nature of the interactions. All interactions in Y-X-✶-π(C6 H6 ) are classified by pure closed-shell interactions and characterized to have vdW nature, except for Y-I-✶-π(C6 H6 ) (Y=F, Cl, Br) and F-Br-✶-π(C6 H6 ), which have typical hydrogen-bond nature without covalency. I-I-✶-π(C6 H6 ) has a borderline nature between the two. Y-F-✶-π(C6 H6 ) (Y=Br, I) were optimized as bent forms, in which Y-✶-π interactions were detected. The Y-✶-π interactions in the bent forms are predicted to be substantially weaker than those in the linear F-Y-✶-π(C6 H6 ) forms.
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Affiliation(s)
- Yuji Sugibayashi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan
| | - Satoko Hayashi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan.
| | - Waro Nakanishi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama, 640-8510, Japan.
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Hayashi S, Sugibayashi Y, Nakanishi W. Dynamic and static behavior of the H...π and E...π interactions in EH₂ adducts of benzene π-system (E = O, S, Se and Te), elucidated by QTAIM dual functional analysis. Phys Chem Chem Phys 2016; 18:9948-60. [PMID: 26818845 DOI: 10.1039/c5cp06062a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dynamic and static behavior of the interactions in the EH2 adducts of a benzene π-system (E = O, S, Se and Te) is elucidated by applying QTAIM-DFA (QTAIM dual functional analysis). Two types of H-*-π and E-*-π interactions are detected in the adducts, where the asterisk (*) emphasizes the existence of the bond critical point (BCP) on the interaction in question. Total electron energy densities Hb(rc) are plotted versus Hb(rc) -Vb(rc)/2 [=(ℏ(2)/8m)∇(2)ρb(rc)] at BCPs in QTAIM-DFA, where Vb(rc) are the potential energy densities at BCPs. Data from the fully optimized structures are analyzed by polar (R, θ) coordinate representation. Each plot for an interaction, containing data from the perturbed structures with those of the fully optimized one, shows a specific curve, which provides important information. The plot is expressed by (θp, κp): θp corresponds to the tangent line for the plot and κp is the curvature. θ and θp are measured from the y-axis and y-direction, respectively. Moreover, (R, θ) corresponds to the static nature, (θp, κp) represents the dynamic nature of interactions. While θ classifies the interaction in question, θp characterizes it. Both values are less than 90° for all H-*-π and E-*-π interactions examined in this study; therefore, they are all classified by the pure closed-shell interactions and predicted to have the character of vdW nature. However, it is suggested that E-*-π has the nature of the stronger interaction than the case of H-*-π for dynamic behavior in the same species evaluated at the MP2 and M06-2X levels. The nature of the interactions is well analyzed and specified by applying QTAIM-DFA.
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Affiliation(s)
- Satoko Hayashi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan.
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Miyamoto K, Iwasaki S, Doi R, Ota T, Kawano Y, Yamashita J, Sakai Y, Tada N, Ochiai M, Hayashi S, Nakanishi W, Uchiyama M. Mechanistic Studies on the Generation and Properties of Superelectrophilic Singlet Carbenes from Bis(perfluoroalkanesulfonyl)bromonium Ylides. J Org Chem 2016; 81:3188-98. [DOI: 10.1021/acs.joc.6b00142] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazunori Miyamoto
- Graduate
School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Susumu Iwasaki
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 30-8 Shomachi, Tokushima 770-8505, Japan
| | - Ryusuke Doi
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 30-8 Shomachi, Tokushima 770-8505, Japan
| | - Taiga Ota
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 30-8 Shomachi, Tokushima 770-8505, Japan
| | - Yufuko Kawano
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 30-8 Shomachi, Tokushima 770-8505, Japan
| | - Junpei Yamashita
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 30-8 Shomachi, Tokushima 770-8505, Japan
| | - Yuuta Sakai
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 30-8 Shomachi, Tokushima 770-8505, Japan
| | - Norihiro Tada
- Gifu Pharmaceutical University, 1-25-4, Daigaku-nishi, Gifu 501-1196, Japan
| | - Masahito Ochiai
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 30-8 Shomachi, Tokushima 770-8505, Japan
| | - Satoko Hayashi
- Department
of Materials Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Waro Nakanishi
- Department
of Materials Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Masanobu Uchiyama
- Graduate
School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo
Bunkyo-ku, Tokyo 113-0033, Japan
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Nakanishi W, Tsubomoto Y, Hayashi S. Nature of S2Se2 σ(4c–6e) at naphthalene 1,8-positions and models, elucidated by QTAIM dual functional analysis. RSC Adv 2016. [DOI: 10.1039/c6ra17767k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The nature of BE–*–AE–*–AE–*–BE σ(4c–6e) is primarily elucidated at naphthalene 1,8-positions: while the weak covalent nature is predicted for all AE–*–AE, the HB nature with covalency or the CT-MC (MC formation through CT) nature is for AE–*–BE.
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Affiliation(s)
- Waro Nakanishi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Yutaka Tsubomoto
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Satoko Hayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
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41
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Hayashi S, Sugibayashi Y, Nakanishi W. Quantum chemical calculations with the AIM approach applied to the π-interactions between hydrogen chalcogenides and naphthalene. RSC Adv 2016. [DOI: 10.1039/c6ra04738f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The nature of π-interactions in (EH2)n–*–π(C10H8) (n = 1 and 2: E = O, S, Se and Te) is elucidated with QTAIM-DFA. They have the character of the vdW-nature of the pure-CS interactions, except for HHTe–*–π(C10H8), which seems stronger than others.
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Affiliation(s)
- Satoko Hayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama
- 640-8510 Japan
| | - Yuji Sugibayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama
- 640-8510 Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama
- 640-8510 Japan
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42
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Hayashi S, Matsuiwa K, Nishizawa N, Nakanishi W. Transannular E···E′ Interactions in Neutral, Radical Cationic, and Dicationic Forms of cyclo-[E(CH2CH2CH2)2E′] (E, E′ = S, Se, Te, and O) with Structural Feature: Dynamic and Static Behavior of E···E′ Elucidated by QTAIM Dual Functional Analysis. J Org Chem 2015; 80:11963-76. [DOI: 10.1021/acs.joc.5b01794] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Satoko Hayashi
- Department
of Material Science
and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Kohei Matsuiwa
- Department
of Material Science
and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Nozomu Nishizawa
- Department
of Material Science
and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
| | - Waro Nakanishi
- Department
of Material Science
and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510, Japan
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Hayashi S, Nakanishi W. Basic Concept and Applications of AIM Dual Functional Analysis: For Better Understanding and Explanation of Experimental Results Related to Interactions. J SYN ORG CHEM JPN 2015. [DOI: 10.5059/yukigoseikyokaishi.73.39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Waro Nakanishi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University
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Tsubomoto Y, Hayashi S, Nakanishi W. Dynamic and static behavior of the E–E′ bonds (E, E′ = S and Se) in cystine and derivatives, elucidated by AIM dual functional analysis. RSC Adv 2015. [DOI: 10.1039/c4ra13276a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
AIM-DFA (AIM dual functional analysis) is applied to the E–E′ bonds (E, E′ = S and Se) in R-cystine (1), its derivatives and MeEE′Me. The nature of E–E′ is elucidated by (θp, κp: dynamic behavior) and (R, θ: static behavior), through AIM-DFA.
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Affiliation(s)
- Yutaka Tsubomoto
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Satoko Hayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
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Sugibayashi Y, Hayashi S, Nakanishi W. Dynamic and static behavior of hydrogen bonds of the X–H⋯π type (X = F, Cl, Br, I, RO and RR′N; R, R′ = H or Me) in the benzene π-system, elucidated by QTAIM dual functional analysis. Phys Chem Chem Phys 2015; 17:28879-91. [DOI: 10.1039/c5cp04885k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nature of the X–H-*-π interactions in X–H-*-π(C6H6) (X = F, Cl, Br, I, HO, MeO, H2N, MeHN and Me2N) was elucidated by applying QTAIM dual functional analysis. The interactions were all classified by pure closed-shell interactions and characterized to have the vdW nature.
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Affiliation(s)
- Yuji Sugibayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Satoko Hayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510
- Japan
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Hayashi S, Matsuiwa K, Miza H, Nakanishi W. Dynamic and Static Behavior of E-E' Bonds in Neutral and Charged Forms of HEE'H, MeEE'Me, andCyclo-1,2-EE'(CH2)3(E, E' = O, S, Se, and Te) Elucidated by AIM Dual Functional Analysis. Heteroatom Chem 2014. [DOI: 10.1002/hc.21194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Satoko Hayashi
- Department of Material Science and Chemistry; Faculty of Systems Engineering, Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Kohei Matsuiwa
- Department of Material Science and Chemistry; Faculty of Systems Engineering, Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Hiroaki Miza
- Department of Material Science and Chemistry; Faculty of Systems Engineering, Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry; Faculty of Systems Engineering, Wakayama University; 930 Sakaedani Wakayama 640-8510 Japan
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Murai T, Nishi D, Hayashi S, Nakanishi W. Aromatic Selenoic, Selenothioic, and Diselenoic Acid Salts: Isolation, Characterization, and 77Se NMR Spectra, Together with Theoretical Elucidation. BCSJ 2014. [DOI: 10.1246/bcsj.20140018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University
- JST, ACT-C
| | - Daisuke Nishi
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University
| | - Satoko Hayashi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University
| | - Waro Nakanishi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University
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48
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Nomoto A, Hayashi S, Fujiyama T, Ikeda T, Hirata K, Tohoma J, Kakiuchi K, Nakanishi W, Ogawa A. Photoinduced Regio- and Stereoselective Introduction of Phenylchalcogeno Moieties to Ethynylferrocene. BCSJ 2014. [DOI: 10.1246/bcsj.20130160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Akihiro Nomoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
| | - Satoko Hayashi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University
| | - Takuya Fujiyama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
| | - Takuma Ikeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
| | - Kiichi Hirata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
| | - Jun Tohoma
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
| | - Kiyomi Kakiuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)
| | - Waro Nakanishi
- Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University
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Miyagi S, Kawagishi N, Maida K, Nakanishi W, Hara Y, Nakanishi C, Takeda I, Satoh K, Ohuchi N, Satomi S. Risk Factors for Portal Vein Stenosis in Living-Donor Liver Transplantation. Transplant Proc 2014; 46:689-91. [DOI: 10.1016/j.transproceed.2013.09.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Accepted: 09/26/2013] [Indexed: 11/27/2022]
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Hayashi S, Matsuiwa K, Nakanishi W. Relativistic effects on the 125Te and 33S NMR chemical shifts of various tellurium and sulfur species, together with 77Se of selenium congeners, in the framework of a zeroth-order regular approximation: applicability to tellurium compounds. RSC Adv 2014. [DOI: 10.1039/c4ra07818g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The relativistic effects on σ(Te), σ(Se), and σ(S) were evaluated separately by scalar and spin–orbit terms for various species containing Te, Se, and S nuclei. The applicability of σt(Te)Rlt-so to analyze δ(Te)obsd and the trend in the nuclei are discussed.
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Affiliation(s)
- Satoko Hayashi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510, Japan
| | - Kohei Matsuiwa
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510, Japan
| | - Waro Nakanishi
- Department of Material Science and Chemistry
- Faculty of Systems Engineering
- Wakayama University
- Wakayama 640-8510, Japan
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