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Maity A, Mishra VK, Dolai S, Mishra S, Patra SK. Design, Synthesis, and Characterization of Organometallic BODIPY-Ru(II) Dyads: Redox and Photophysical Properties with Singlet Oxygen Generation Capability†. Inorg Chem 2024; 63:4839-4854. [PMID: 38433436 DOI: 10.1021/acs.inorgchem.3c03610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
A series of Ru(II)-acetylide complexes (Ru1, Ru2, and Ru1m) with alkynyl-functionalized borondipyrromethene (BODIPY) conjugates were designed by varying the position of the linker that connects the BODIPY unit to the Ru(II) metal center through acetylide linkage at either the 2-(Ru1) and 2,6-(Ru2) or the meso-phenyl (Ru1m) position of the BODIPY scaffold. The Ru(II) organometallic complexes were characterized by various spectroscopic methods, including nuclear magnetic resonance (NMR) spectroscopy, infrared (IR) spectroscopy, CHN, and high-resolution mass spectrometry (HRMS) analyses. The Ru(II)-BODIPY conjugates exhibit fascinating electrochemical and photophysical properties. All BODIPY-Ru(II) complexes exhibit strong absorption (εmax = 29,000-72,000 M-1 cm-1) in the visible region (λmax = 502-709 nm). Fluorescence is almost quenched for Ru1 and Ru2, whereas Ru1m shows the residual fluorescence of the corresponding BODIPY core at 517 nm. The application of the BODIPY-Ru(II) dyads as nonporphyrin-based triplet photosensitizers was explored by a method involving the singlet oxygen (1O2)-mediated photo-oxidation of diphenylisobenzofuran. Effective π-conjugation between the BODIPY chromophore and Ru(II) center in the case of Ru1 and Ru2 was found to be necessary to improve intersystem crossing (ISC) and hence the 1O2-sensitizing ability. In addition, electrochemical studies indicate electronic interplay between the metal center and the redox-active BODIPY in the BODIPY-Ru(II) dyads.
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Affiliation(s)
- Apurba Maity
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Vipin Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Suman Dolai
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Sanjib K Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
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2
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Zeng C, Xu QD, Liu XL, Yang YY, Hu SM, Wu XT, Sheng TL. Metal-Metal Charge Transfer Properties of a Series of Trinuclear Fe 2 Ru and Corresponding Pentanuclear Fe 2 Ru 2 Ag Cyanido-Bridged Complexes. Chemistry 2023; 29:e202300433. [PMID: 37526193 DOI: 10.1002/chem.202300433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 06/13/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023]
Abstract
A series of trimetallic cyanidometal-bridged compounds [Men Cp(dppe)FeII -(μ-NC)-RuII (MeOpy)4 -(μ-CN)-FeII (dppe)CpMen ] - [PF6 ]2 (N[PF6 ]2 , n=0, N =1; n=1, N=2; n=3, N=3; Cp=cyclopentadiene, dppe=1,2-bis(diphenylphosphino)ethane, MeOpy=4-methoxypyridine) and their one- and two-electron oxidized compounds N3+ and N4+ were synthesized and characterized. Meanwhile, a series of corresponding linear cyanido-bridged pentanuclear compounds [Men Cp(dppe)FeIII -(μ-NC)-RuII (MeOpy)4 -(μ-NC)-AgI -(μ-CN)-RuII (MeOpy)4 -(μ-CN)-FeIII (dppe)CpMen ][BF4 ]5 (M[BF4 ]5 , n=0, M=4; n=1, M=5; n=3, M=6) were also obtained and well characterized. The investigations suggest that in the trinuclear system there exists remote interaction between the two Fe centers, but no significant interactions exist across the central silver unit between the metals on the two sides of the silver center in the pentanuclear system. In both the trinuclear N4+ and the pentanuclear M5+ complexes, there exists the neighboring RuII →FeIII MM'CT transitions, and the MM'CT energy in the corresponding trinuclear system is higher than those in the pentanuclear system in which no remote metal-metal interaction occurs. Meanwhile, as the substituted methyl groups on the cyclopentadiene increases, the redox potential of the ruthenium in the trinuclear N4+ series increases, but that in the pentanuclear M5+ complexes decreases.
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Affiliation(s)
- Chen Zeng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science Fuzhou, Fujian, 350002, P.R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Qing-Dou Xu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science Fuzhou, Fujian, 350002, P.R. China
| | - Xiao-Lin Liu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science Fuzhou, Fujian, 350002, P.R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Yu-Ying Yang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science Fuzhou, Fujian, 350002, P.R. China
| | - Sheng-Min Hu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science Fuzhou, Fujian, 350002, P.R. China
| | - Xin-Tao Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science Fuzhou, Fujian, 350002, P.R. China
| | - Tian-Lu Sheng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science Fuzhou, Fujian, 350002, P.R. China
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3
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Lin Z, Li Z, Xiao W, Kong L, Xu J, Xia Y, Zhu X, Zhang F, Ou YP. Terpyridine Ruthenium-Triarylamine Asymmetrical Mixed-Valence Systems: Syntheses, (Spectro) Electrochemistry and Theoretical Calculations. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2023.122708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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4
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Synthesis, FTIR, NMR, UV–vis and electrochemistry analysis of ferrocenyl Schiff bases. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2022.121319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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5
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Amine Zerizer M, Nemdili H, Zouchoune B. Electron transfers’ assessment between stannol ring of triple-decker complexes and M(CO)5 (M = Cr, Mo, W), MnCp(CO)2 and CoCp(CO) metallic fragments: Bonding and energy decomposition analysis. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Ou YP, Yang X, Lin Z, Kong L, Liu SH. Binuclear Metal Ruthenium Complexes Bridged by Isomeric Bis(ethynyl)pyridine: Syntheses, Characterization and Electronic Coupling Properties. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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7
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Abstract
Treatment of 3,4-(ClC(O))2-cC4H2S (1) with [FcCH2OLi] (2-Li) (Fc = Fe(η5-C5H5)(η5-C5H4)) in a 1:2 ratio gave 3,4-(FcCH2OC(O))2-cC4H2S (3). Compound 3 decomposes in solution during crystallization to produce FcCH2OH (2) along with 3,4-thiophenedicarboxylic anhydride (4). The cyclic voltammogram of 3 exhibits a reversible ferrocene-related redox couple (E1/2 = 108 mV, vs. Cp2Fe/Cp2Fe+) using [NnBu4] [B(C6F5)4] as the supporting electrolyte. DFT calculations reveal that the energy values of the LUMO orbitals of 3 (3,4-thiophene core) show 1 eV higher energies than that one of 2,5-(FcCH2OC(O))2-cC4H2S (5), both compounds’ HOMO orbitals are close to each other. Compound 4 was characterized by single X-ray structure analysis. It forms a band-type structure based on intermolecular O1···S1 interactions being parallel to (110) and (1–10) in the solid state, while electrostatic C···O interactions between the C=O functionalities of adjacent molecules connect both 3D-networks. Hirshfeld surface analysis was used to gain more insight into the intermolecular interactions in 4, the enrichment ratios (E) suggest that O···H, S···S, and O···C are the most favored intermolecular interactions, as shown by E values above 1.20. The relevance of the weak O···H, O···O, and O···C contacts in stabilizing the molecular structure of 4 was highlighted by the interaction energies between molecular pairs.
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Yamada Y, Iida H, Shibano S, Mihara N, Kato T, Tanaka K. Significant Effect of the Flexibility of Bridging Alkyl Chains on the Proximity of Stacked Porphyrin and Phthalocyanine Conjugated with a Fourfold Rotaxane Linkage. Chemistry 2022; 28:e202200819. [DOI: 10.1002/chem.202200819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Yasuyuki Yamada
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
- Research Center for Materials Science Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
| | - Hayato Iida
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
| | - Shinya Shibano
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
| | - Nozomi Mihara
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
| | - Tatsuhisa Kato
- Fukui Institute for Fundamental Chemistry Kyoto University Takano-Nishihiraki-cho, Sakyo-ku Kyoto 606-8103 Japan
| | - Kentaro Tanaka
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
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Biegański P, Kovalski E, Israel N, Dmitrieva E, Trzybiński D, Woźniak K, Vrček V, Godel M, Riganti C, Kopecka J, Lang H, Kowalski K. Electronic Coupling in 1,2,3-Triazole Bridged Ferrocenes and Its Impact on Reactive Oxygen Species Generation and Deleterious Activity in Cancer Cells. Inorg Chem 2022; 61:9650-9666. [PMID: 35699521 PMCID: PMC9490837 DOI: 10.1021/acs.inorgchem.2c01110] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
![]()
Mixed-valence (MV)
binuclear ferrocenyl compounds have long been
studied as models for testing theories of electron transfer and in
attempts to design molecular-scale electronic devices (e.g., molecular wires). In contrary to that, far less attention has
been paid to MV binuclear ferrocenes as anticancer agents. Herein,
we discuss the synthesis of six 1,2,3-triazole ferrocenyl compounds
for combined (spectro)electrochemical, electron paramagnetic resonance
(EPR), computational, and anticancer activity studies. Our synthetic
approach was based on the copper-catalyzed 1,3-dipolar azide–alkyne
cycloaddition reaction and enabled us to obtain in one step compounds
bearing either one, two, or three ferrocenyl entities linked to the
common 1,2,3-triazole core. Thus, two series of complexes were obtained,
which pertain to derivatives of 3′-azido-3′-deoxythymidine
(AZT) and 3-azidopropionylferrocene, respectively. Based on the experimental
and theoretical data, the two mono-oxidized species corresponding
to binuclear AZT and trinuclear 3-azidopropionylferrocene complexes
have been categorized as class II mixed-valence according to the classification
proposed by Robin and Day. Of importance is the observation that these
two compounds are more active against human A549 and H1975 non-small-cell
lung cancer cells than their congeners, which do not show MV characteristics.
Moreover, the anticancer activity of MV species competes or surpasses,
dependent on the cell line, the activity of reference anticancer drugs
such as cisplatin, tamoxifen, and 5-fluorouracil. The most active
from the entire series of compounds was the binuclear thymidine derivative
with the lowest IC50 value of 5 ± 2 μM against
lung H1975 cancer cells. The major mechanism of antiproliferative
activity for the investigated MV compounds is based on reactive oxygen
species generation in cancer cells. This hypothesis was substantiated
by EPR spin-trapping experiments and the observation of decreased
anticancer activity in the presence of N-acetyl cysteine
(NAC) free-radical scavenger. The
1,2,3-triazole bridged bi- and triferrocenyl compounds
were prepared via a “click” reaction.
Their corresponding mono-oxidized forms have been categorized as class
II MV species. The biferrocenyl thymidine derivative showed remarkable
anticancer activity against human A549 and H1975 cancer cells and
negligible activity against nonmalignant human BEAS-2B cells. The
anticancer activity mechanism is mainly due to ROS generation, and
it originates from the combination of electronic coupling and the
thymidine moiety, combined all together in one molecular scaffold.
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Affiliation(s)
- Przemysław Biegański
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Eduard Kovalski
- Institut für Chemie, Anorganische Chemie, Fakultät für Naturwissenschaften, Technische Universität Chemnitz, Straße der Nationen 62, D-09107 Chemnitz, Germany
| | - Noel Israel
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstraße 20, D-01069 Dresden, Germany
| | - Evgenia Dmitrieva
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstraße 20, D-01069 Dresden, Germany
| | - Damian Trzybiński
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Krzysztof Woźniak
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Valerije Vrček
- Department of Organic Chemistry, Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
| | - Martina Godel
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Turin, Italy
| | - Chiara Riganti
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Turin, Italy
| | - Joanna Kopecka
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Turin, Italy
| | - Heinrich Lang
- Institut für Chemie, Anorganische Chemie, Fakultät für Naturwissenschaften, Technische Universität Chemnitz, Straße der Nationen 62, D-09107 Chemnitz, Germany.,MAIN Research Center, Technische Universität Chemnitz, Rosenbergstraße 6, 09126 Chemnitz, Germany
| | - Konrad Kowalski
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
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Sil A, Roy SS, Mishra VK, Islam SN, Mishra S, Patra SK. Modulation of Electrochemical and Spectroscopic Properties in Ru(II)‐Terpyridyl End‐Capped Homobimetallic Organometallic Complexes by Varying π‐Conjugated Organic Spacers. ChemistrySelect 2022. [DOI: 10.1002/slct.202200152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amit Sil
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sourav Saha Roy
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Vipin Kumar Mishra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sk Najmul Islam
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sabyashachi Mishra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
- Centre for Computational and Data Sciences Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Sanjib K. Patra
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721302 India
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11
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Jiang P, Yang X, Cao N, Zhu X, Zhang F, Liu SH, Ou YP. Tuning iron-amine electronic coupling by different aromatic bridges based on ferrocene-ethynyl-triarylamine systems. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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12
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Asim W, Waheeb AS, Awad MA, Kadhum AM, Ali A, Mallah SH, Iqbal MA, Kadhim MM. Recent advances in the synthesis of zirconium complexes and their catalytic applications. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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13
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Mahrholdt J, Noll J, Korb M, Rüffer T, Lang H. Isocyano- and Cyanoferrocenes in the Synthesis of Palladium, Gold and Zinc Complexes. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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14
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Ou YP, Zhang Q, Yang X, Cao N, Jiang P, Hua Liu S. Isomeric triarylamine-ferrocene mixed-valence systems: Syntheses, structural-(spectro)electrochemical analysis, and theoretical calculations. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Miyake R, Suganuma E, Kimura S, Mori H, Okabayashi J, Kusamoto T. Cyclic Heterometallic Interactions formed from a Flexible Tripeptide Complex Showing Effective Antiferromagnetic Spin Coupling. Angew Chem Int Ed Engl 2021; 60:5179-5183. [PMID: 33207016 DOI: 10.1002/anie.202013373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Indexed: 11/09/2022]
Abstract
Developing tunable motifs for heterometallic interactions should be beneficial for fabricating functional materials based on cooperative electronic communications between metal centers. Reported here is the efficient formation of cyclic heterometallic interactions from a complex containing an artificial tripeptide with metal binding sites on its main chain and side chains. X-ray structural analysis and X-ray absorption spectroscopy revealed that the cyclic metal-metal arrangements arise from the amide groups connecting four square-planar CuII centers and four octahedral NiII centers in a cyclic manner. UV/Vis spectral studies suggested that this efficient formation was achieved by the selective formation of the square-planar CuII centers and a crystallization process. Magnetic measurements using SQUID clarified that the cyclic complex represented the S=2 spin state at low temperatures due to effective antiferromagnetic interactions between the NiII and CuII centers.
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Affiliation(s)
- Ryosuke Miyake
- Department of Chemistry and Biochemistry, Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.,JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Eri Suganuma
- Department of Chemistry and Biochemistry, Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Shun Kimura
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan
| | - Hirotoshi Mori
- Department of Applied Chemistry, Faculty of Science & Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-Ku, Tokyo, 112-8551, Japan
| | - Jun Okabayashi
- Research Center for Spectrochemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tetsuro Kusamoto
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan
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Miyake R, Suganuma E, Kimura S, Mori H, Okabayashi J, Kusamoto T. Cyclic Heterometallic Interactions formed from a Flexible Tripeptide Complex Showing Effective Antiferromagnetic Spin Coupling. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ryosuke Miyake
- Department of Chemistry and Biochemistry Graduate School of Humanities and Sciences Ochanomizu University 2-1-1, Otsuka, Bunkyo-ku Tokyo 112-8610 Japan
- JST-PRESTO 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Eri Suganuma
- Department of Chemistry and Biochemistry Graduate School of Humanities and Sciences Ochanomizu University 2-1-1, Otsuka, Bunkyo-ku Tokyo 112-8610 Japan
| | - Shun Kimura
- Department of Chemistry Graduate School of Science The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Department of Life and Coordination-Complex Molecular Science Institute for Molecular Science 5-1 Higashiyama Myodaiji, Okazaki 444-8787 Japan
| | - Hirotoshi Mori
- Department of Applied Chemistry, Faculty of Science & Engineering Chuo University 1-13-27 Kasuga, Bunkyo-Ku Tokyo 112-8551 Japan
| | - Jun Okabayashi
- Research Center for Spectrochemistry Graduate School of Science The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tetsuro Kusamoto
- Department of Life and Coordination-Complex Molecular Science Institute for Molecular Science 5-1 Higashiyama Myodaiji, Okazaki 444-8787 Japan
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17
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Cancela L, Esteruelas MA, Galbán J, Oliván M, Oñate E, Vélez A, Vidal JC. Electronic Communication in Binuclear Osmium- and Iridium-Polyhydrides. Inorg Chem 2021; 60:2783-2796. [PMID: 33543934 PMCID: PMC9179948 DOI: 10.1021/acs.inorgchem.0c03680] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Reactions of polyhydrides OsH6(PiPr3)2 (1)
and IrH5(PiPr3)2 (2) with rollover cyclometalated
hydride complexes have been investigated in order to explore the influence
of a metal center on the MHn unit of the
other in mixed valence binuclear polyhydrides. Hexahydride 1 activates an ortho-CH bond of the heterocyclic
moiety of the trihydride metal–ligand compounds OsH3{κ2-C,N-[C5RH2N-py]}(PiPr3)2 (R = H (3), Me (4), Ph (5)). Reactions of 3 and 4 lead to the hexahydrides
(PiPr3)2H3Os{μ-[κ2-C,N-[C5RH2N-C5H3N]-N,C-κ2]}OsH3(PiPr3)2 (R = H (6), Me (7)),
whereas 5 gives the pentahydride (PiPr3)2H3Os{μ-[κ2-C,N-[C5H3N-C5(C6H4)H2N]-C,N,C-κ3]}OsH2(PiPr3)2 (8).
Pentahydride 2 promotes C—H bond activation of 3 and the iridium-dihydride IrH2{κ2-C,N-[C5H3N-py]}(PiPr3)2 (9)
to afford the heterobinuclear pentahydride (PiPr3)2H3Os{μ-[κ2-C,N-[C5H3N-C5H3N]-N,C-κ2]}IrH2(PiPr3)2 (10) and the homobinuclear tetrahydride (PiPr3)2H2Ir{μ-[κ2-C,N-[C5H3N-C5H3N]-N,C-κ2]}IrH2(PiPr3)2 (11), respectively. Complexes 6–8 and 11 display HOMO delocalization
throughout the metal–heterocycle-metal skeleton. Their sequential
oxidation generates mono- and diradicals, which exhibit intervalence
charge transfer transitions. This notable ability allows the tuning
of the strength of the hydrogen–hydrogen and metal–hydrogen
interactions within the MHn units. The influence of a metal center on the
MHn unit of the other in binuclear osmium-
and iridium-polyhydride
complexes bearing rollover cyclometalated bipyridines as a bridging
ligand has been studied.
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Affiliation(s)
- Lara Cancela
- Departamento de Química Inorgánica - Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) - Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza - CSIC, 50009 Zaragoza, Spain
| | - Miguel A Esteruelas
- Departamento de Química Inorgánica - Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) - Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza - CSIC, 50009 Zaragoza, Spain
| | - Javier Galbán
- Departamento de Química Analítica, Facultad de Ciencias - Instituto de Nanociencia de Aragón (INA-ICMA), Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Montserrat Oliván
- Departamento de Química Inorgánica - Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) - Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza - CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica - Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) - Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza - CSIC, 50009 Zaragoza, Spain
| | - Andrea Vélez
- Departamento de Química Inorgánica - Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) - Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza - CSIC, 50009 Zaragoza, Spain
| | - Juan C Vidal
- Grupo de Espectroscopia Analítica y Sensores (GEAS) - Instituto de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, 50009 Zaragoza, Spain
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18
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Preite M, Molins E, Chávez I, Amshumali MK, Morales-Verdejo C, Dibdalli Y, Faúndez R, Manriquez JM. An Improved Synthesis of 3,6-Dihydro-as-indacene. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1707372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThis contribution describes an updated synthetic route to 3,6-dihydro-as-indacene along with full characterization of all intermediates. The title compound is prepared by Mannich condensation of 2-methylfuran with formaldehyde and dimethylamine hydrochloride, quaternization of the resulting amine with methyl iodide, and conversion into the ammonium hydroxide salt by treatment with silver oxide in water. Subsequent Hoffmann elimination and [6,6]-cycloaddition through pyrolysis produces a furanocyclophane, which after photooxidation, intramolecular cycloaddition, and dehydration with sodium carbonate affords 2,3,6,7-tetrahydro-1,8-dione-as-indacene. Reduction of this diketone gives a mixture of alcohols, which after dehydration under slightly basic or acidic conditions produces 3,6-dihydro-as-indacene. The structure is confirmed by X-ray diffraction, and all intermediates are characterized by means of 1H and 13C NMR spectroscopy.
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Affiliation(s)
- Marcelo Preite
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile
| | - Elies Molins
- Instituto de Ciencia de los Materiales de Barcelona (ICMAB-CSIC)
| | - Ivonne Chávez
- Departamento de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile
| | | | - Cesar Morales-Verdejo
- Universidad Bernardo O’Higgins, Centro Integrativo de Biología y Química Aplicada (CIBQA)
| | - Yuvaraja Dibdalli
- Department of Chemistry/Industrial Chemistry, Vijayanagara Sri Krishnadevaraya University
- Departamento de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile
| | - Rodrigo Faúndez
- Departamento de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile
| | - Juan M. Manriquez
- Departamento de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile
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19
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Meyer RL, Greer SM, Blake AV, Cary SK, Ditter AS, Daly SR, Li F, Kozimor SA, Matson EM, Mocko V, Seidler GT, Stein BW, Weinstein SD. Characterizing Polyoxovanadate-Alkoxide Clusters Using Vanadium K-Edge X-Ray Absorption Spectroscopy. Chemistry 2021; 27:1592-1597. [PMID: 33064328 DOI: 10.1002/chem.202003625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/17/2020] [Indexed: 11/08/2022]
Abstract
A number of technologies would benefit from developing inorganic compounds and materials with specific electronic and magnetic exchange properties. Unfortunately, designing compounds with these properties is difficult because metal⋅⋅⋅metal coupling schemes are hard to predict and control. Fully characterizing communication between metals in existing compounds that exhibit interesting properties could provide valuable insight and advance those predictive capabilities. One such class of molecules are the series of Lindqvist iron-functionalized and hexavanadium polyoxovanadate-alkoxide clusters, which we characterized here using V K-edge X-ray absorption spectroscopy. Substantial changes in the pre-edge peak intensities were observed that tracked with the V 3d-electron count. The data also suggested substantial delocalization between the vanadium cations. Meanwhile, the FeIII cations were electronically isolated from the polyoxovanadate core.
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Affiliation(s)
- Rachel L Meyer
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.,Department of Chemistry, University of Rochester, Rochester, NY, 14627, USA
| | - Samuel M Greer
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Anastasia V Blake
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.,Department of Chemistry, University of Iowa, Iowa City, IA, 52242, USA
| | - Samantha K Cary
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Alexander S Ditter
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.,Department of Physics, University of Washington, Seattle, WA, 98195-1560, USA
| | - Scott R Daly
- Department of Chemistry, University of Iowa, Iowa City, IA, 52242, USA
| | - Feng Li
- Department of Chemistry, University of Rochester, Rochester, NY, 14627, USA
| | - Stosh A Kozimor
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Ellen M Matson
- Department of Chemistry, University of Rochester, Rochester, NY, 14627, USA
| | - Veronika Mocko
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Gerald T Seidler
- Department of Physics, University of Washington, Seattle, WA, 98195-1560, USA
| | - Benjamin W Stein
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Samuel D Weinstein
- Department of Chemistry, University of Rochester, Rochester, NY, 14627, USA
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20
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Roy SS, Chowdhury SR, Mishra S, Patra SK. Role of Substituents at 3-position of Thienylethynyl Spacer on Electronic Properties in Diruthenium(II) Organometallic Wire-like Complexes. Chem Asian J 2020; 15:3304-3313. [PMID: 32790947 DOI: 10.1002/asia.202000755] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/27/2020] [Indexed: 11/11/2022]
Abstract
A series of organometallic complexes [Cl(dppe)2 Ru-C≡C-(3-R-C4 H2 S)-C≡C-Ru(dppe)2 Cl] (3-R-C4 H2 S=3-substituted thienyl moiety; R=-H, -C2 H5 , -C3 H7 , -C4 H9 , -C6 H13 , -OMe, -CN in 5 a-5 g respectively) have been synthesized by systematic variation of 3-substituents at the thienylethynyl bridging unit. The diruthenum(II) wire-like complexes (5 a-5 g) have been achieved by the reaction of thienylethynyl bridging units, HC≡C-(3-R-C4 H2 S)-C≡CH (4 a-4 g) with cis-[Ru(dppe)2 Cl2 ]. The wire-like diruthenium(II) complexes undergo two consecutive electrochemical oxidation processes in the potential range of 0.0 - 0.8 V. Interestingly, the wave separation between the two redox waves is greatly influenced by the substituents at the 3-position of the thienylethynyl. Thus, the substitution on 3-position of the thienylethynyl bridging unit plays a pivotal role for tuning the electronic properties. To understand the electronic behavior, density functional theory (DFT) calculations of the selected diruthenium wire-like complexes (5 a-5 e) with different alkyl appendages are performed. The theoretical data demonstrate that incorporation of alkyl groups to the thienylethynyl entity leaves unsymmetrical spin densities, thus affecting the electronic properties. The voltammetric features of the other two Ru(II) alkynyl complexes 5 f and 5 g (with -OMe and -CN group respectively) show an apparent dependence on the electronic properties. The electronic properties in the redox conjugate, (5 a+ ) with Kc of 3.9×106 are further examined by UV-Vis-NIR and FTIR studies, showing optical responses in NIR region along with changes in "-Ru-C≡C-" vibrational stretching frequency. The origin of the observed electronic transition has been assigned based on time-dependent DFT (TDDFT) calculations.
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Affiliation(s)
- Sourav Saha Roy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, WB, India
| | | | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, WB, India
| | - Sanjib K Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, WB, India
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21
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Leung A, Kang J, Cai Y, Chang W, Liu K, Xia H, Wang X. Competition between Ring-Closing Migratory Insertion Polymerization and Monomer Cyclization. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aaron Leung
- Department of Chemistry and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Avenue, Waterloo, Ontario N2L 3G1, Canada
| | - Jing Kang
- Department of Chemistry and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Avenue, Waterloo, Ontario N2L 3G1, Canada
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, Jilin, China
| | - Yuanting Cai
- Department of Chemistry and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Avenue, Waterloo, Ontario N2L 3G1, Canada
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 261005, Fujian, China
| | - Weiwei Chang
- Department of Chemistry and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Avenue, Waterloo, Ontario N2L 3G1, Canada
- Analysis and Testing Center, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Kun Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, Jilin, China
| | - Haiping Xia
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 261005, Fujian, China
| | - Xiaosong Wang
- Department of Chemistry and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Avenue, Waterloo, Ontario N2L 3G1, Canada
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22
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DeSimone MA, Ilagan MRQ, Pike RD, Herber RH, Watson EJ. Syntheses, structures and mössbauer effect spectroscopy of triple-decker complexes incorporating decamethylferrocene. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Wu J, Ramanathan A, Kersting R, Jystad A, Zhu H, Hu Y, Marshall CP, Caricato M, Subramaniam B. Enhanced Olefin Metathesis Performance of Tungsten and Niobium Incorporated Bimetallic Silicates: Evidence of Synergistic Effects. ChemCatChem 2020. [DOI: 10.1002/cctc.201902131] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jian‐Feng Wu
- State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 P. R. China
- Center for Environmentally Beneficial CatalysisThe University of Kansas Lawrence KS-66047 USA
| | - Anand Ramanathan
- Center for Environmentally Beneficial CatalysisThe University of Kansas Lawrence KS-66047 USA
| | | | - Amy Jystad
- Department of ChemistryThe University of Kansas Lawrence KS-66045 USA
| | - Hongda Zhu
- Center for Environmentally Beneficial CatalysisThe University of Kansas Lawrence KS-66047 USA
- Department of Chemical and Petroleum EngineeringThe University of Kansas Lawrence KS-66045 USA
| | - Yongfeng Hu
- Canadian Light Source Inc.University of Saskatchewan Saskatoon Saskatchewan S7 N 2 V3 Canada
| | - Craig P. Marshall
- Department of ChemistryThe University of Kansas Lawrence KS-66045 USA
- Department of GeologyThe University of Kansas Lawrence KS-66045 USA
| | - Marco Caricato
- Department of ChemistryThe University of Kansas Lawrence KS-66045 USA
| | - Bala Subramaniam
- Center for Environmentally Beneficial CatalysisThe University of Kansas Lawrence KS-66047 USA
- Department of Chemical and Petroleum EngineeringThe University of Kansas Lawrence KS-66045 USA
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24
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Ou Y, Wang A, Yuan A, Yin C, Hu F. Phenyl‐Bridged Ferrocene/Ruthenium Alkynyl Heterobimetallic Complexes: Syntheses, Characterization, and Electrochemical, Spectroscopic, and Computational Investigation. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ya‐Ping Ou
- College of Chemistry and Material Science Hengyang Normal University Key Laboratory of Functional Metal‐Organic Compounds of Hunan Province Key Laboratory of Functional Organometallic Materials of Hunan Province College Hengyang Hunan 421008 P.R. China
| | - Aihui Wang
- College of Chemistry and Material Science Hengyang Normal University Key Laboratory of Functional Metal‐Organic Compounds of Hunan Province Key Laboratory of Functional Organometallic Materials of Hunan Province College Hengyang Hunan 421008 P.R. China
| | - Ande Yuan
- College of Chemistry and Material Science Hengyang Normal University Key Laboratory of Functional Metal‐Organic Compounds of Hunan Province Key Laboratory of Functional Organometallic Materials of Hunan Province College Hengyang Hunan 421008 P.R. China
| | - Chuang Yin
- College of Chemistry and Material Science Hengyang Normal University Key Laboratory of Functional Metal‐Organic Compounds of Hunan Province Key Laboratory of Functional Organometallic Materials of Hunan Province College Hengyang Hunan 421008 P.R. China
| | - Fang Hu
- Faculty of Materials Science and Chemical Engineering Ningbo University 315211 Ningbo China
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25
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Ma J, Zhai Y, Chen J, Zhou X, Shi W, Zhang J, Li G, Hou HW. Synthesis of pyridine-bridged bisferrocene and its pH value adjustable photoelectric properties. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Ou YAP, Hu Y, Xu M, Wang A, Liu SH. Rutheniumethynyl-triarylamine mixed-valence conjugated system: syntheses, (spectro-)electrochemistry, and theoretical calculations. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1695125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- YA-Ping Ou
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials of Hunan Province College, College of Chemistry and Material Science, Hengyang Normal University, Hengyang, P.R. China
| | - Yuxuan Hu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, P.R. China
| | - Meng Xu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, P.R. China
| | - Aihui Wang
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials of Hunan Province College, College of Chemistry and Material Science, Hengyang Normal University, Hengyang, P.R. China
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, P.R. China
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27
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28
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Paul A, Borrelli R, Bouyanfif H, Gottis S, Sauvage F. Tunable Redox Potential, Optical Properties, and Enhanced Stability of Modified Ferrocene-Based Complexes. ACS OMEGA 2019; 4:14780-14789. [PMID: 31552317 PMCID: PMC6751539 DOI: 10.1021/acsomega.9b01341] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 07/24/2019] [Indexed: 05/20/2023]
Abstract
We report a series of ferrocene-based derivatives and their corresponding oxidized forms in which the introduction of simple electron donating groups like methyl or tert-butyl units on cyclopentadienyl-rings afford great tunability of Fe+III/Fe+II redox potentials from +0.403 V down to -0.096 V versus saturated calomel electrode. The spin forbidden d-d transitions of ferrocene derivatives shift slightly toward the blue region with an increasing number of electron-donating groups on the cyclopentadienyl-rings with very little change in absorptivity values, whereas the ligand-to-metal transitions of the corresponding ferricinium salts move significantly to the near-IR region. The electron-donating groups also contribute in the strengthening of electron density of Fe+III d-orbitals, which therefore improves the chemical stability against the oxygen reaction. Further, density functional theory calculations show a reducing trend in outer shell reorganization energy with an increasing number of the electron donating units.
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Affiliation(s)
- Avishek Paul
- Laboratoire
de Réactivité et Chimie des Solides CNRS
UMR 7314 and Laboratoire de Physique de la Matière Condensée (EA2081), Université de Picardie Jules Verne, 33 Rue Saint Leu, Amiens 80039, France
| | - Raffaele Borrelli
- Dipartimento
di Scienze Agrarie, Forestali e Alimentari, Università di Torino, Largo Paolo Braccini, 2, Grugliasco I-10095, Turin, Italy
| | - Houssny Bouyanfif
- Laboratoire
de Réactivité et Chimie des Solides CNRS
UMR 7314 and Laboratoire de Physique de la Matière Condensée (EA2081), Université de Picardie Jules Verne, 33 Rue Saint Leu, Amiens 80039, France
| | - Sébastien Gottis
- Laboratoire
de Réactivité et Chimie des Solides CNRS
UMR 7314 and Laboratoire de Physique de la Matière Condensée (EA2081), Université de Picardie Jules Verne, 33 Rue Saint Leu, Amiens 80039, France
| | - Frédéric Sauvage
- Laboratoire
de Réactivité et Chimie des Solides CNRS
UMR 7314 and Laboratoire de Physique de la Matière Condensée (EA2081), Université de Picardie Jules Verne, 33 Rue Saint Leu, Amiens 80039, France
- E-mail:
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29
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Abstract
Metal-catalyzed alkyne [2+2+2] cycloadditions provide a variety of substantial aromatic compounds of interest in the chemical and pharmaceutical industries. Herein, the mechanistic aspects of the acetylene [2+2+2] cycloaddition mediated by bimetallic half-sandwich catalysts [Cr(CO)3IndRh] (Ind = (C9H7)−, indenyl anion) are investigated. A detailed exploration of the potential energy surfaces (PESs) was carried out to identify the intermediates and transition states, using a relativistic density functional theory (DFT) approach. For comparison, monometallic parent systems, i.e., CpRh (Cp = (C5H5)−, cyclopentadienyl anion) and IndRh, were included in the analysis. The active center is the rhodium nucleus, where the [2+2+2] cycloaddition occurs. The coordination of the Cr(CO)3 group, which may be in syn or anti conformation, affects the energetics of the catalytic cycle as well as the mechanism. The reaction and activation energies and the turnover frequency (TOF) of the catalytic cycles are rationalized, and, in agreement with the experimental findings, our computational analysis reveals that the presence of the second metal favors the catalysis.
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30
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McBride JJ, Casad TJ, Cheung EE, Pike RD, Watson EJ. Syntheses and Structures of Triple-Decker Complexes Incorporating Octamethylruthenocene and Nonamethylruthenocene. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joseph J. McBride
- Department of Chemistry, Seattle University, 901 12th Avenue, Seattle, Washington 98122, United States
| | - Timothy J. Casad
- Department of Chemistry, Seattle University, 901 12th Avenue, Seattle, Washington 98122, United States
| | - Emina E. Cheung
- Department of Chemistry, Seattle University, 901 12th Avenue, Seattle, Washington 98122, United States
| | - Robert D. Pike
- Department of Chemistry, The College of William and Mary, Williamsburg, Virginia 23187, United States
| | - Eric J. Watson
- Department of Chemistry, Seattle University, 901 12th Avenue, Seattle, Washington 98122, United States
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31
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Gückel S, Gluyas JBG, Eaves SG, Safari P, Yufit DS, Sobolev AN, Kaupp M, Low PJ. A Spectroscopic and Computationally Minimal Approach to the Analysis of Charge-Transfer Processes in Conformationally Fluxional Mixed-Valence and Heterobimetallic Complexes. Chemistry 2019; 25:8837-8853. [PMID: 31050060 DOI: 10.1002/chem.201901200] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Indexed: 11/09/2022]
Abstract
Class II mixed-valence bimetallic complexes {[Cp'(PP)M]C≡C-C≡N[M'(PP)'Cp']}2+ (M, M'=Ru, Fe; PP=dppe, (PPh3 )2 ; Cp'=Cp*, Cp) exist as conformational ensembles in fluid solution, with a population of structures ranging from cis- to trans-like geometries. Each conformer gives rise to its own series of low-energy intervalence charge-transfer (IVCT) and local d-d transitions, which overlap in the NIR region, giving complex band envelopes in the NIR absorption spectrum, which prevent any meaningful attempt at analysis of the band shape. However, DFT and time-dependent (TD)DFT calculations with dispersion-corrected global-hybrid (BLYP35-D3) or local hybrid (lh-SsirPW92-D3) functionals on a small number of optimised structures chosen to sample the ground state potential energy hypersurfaces of each of these complexes has proven sufficient to explain the major features of the electronic spectra. Although modest in terms of computational expense, this approach provides a more accurate description of the underlying molecular electronic structure than would be possible through analysis of the IVCT band by using the static point-charge model of Marcus-Hush theory and derivatives, or TDDFT calculations from a single (global) minimum energy geometry.
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Affiliation(s)
- Simon Gückel
- Institut für Chemie, Theoretische Chemie/Quantenchemie, Technische Universität Berlin, Sekr. C7, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Josef B G Gluyas
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Samantha G Eaves
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia.,Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
| | - Parvin Safari
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Dmitry S Yufit
- Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
| | - Alexandre N Sobolev
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Martin Kaupp
- Institut für Chemie, Theoretische Chemie/Quantenchemie, Technische Universität Berlin, Sekr. C7, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Paul J Low
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
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32
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Speck JM, Korb M, Hildebrandt A, Lang H. Synthesis and Electrochemical Investigations of [Ru(η
5
‐Ferrocenyl‐Thiophene)(η
5
‐C
5
R
5
)]
+
Sandwich Compounds. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- J. Matthäus Speck
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
| | - Marcus Korb
- University of Western Australia School of Molecular Sciences, M310 6009 Perth WA Australia
| | - Alexander Hildebrandt
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
| | - Heinrich Lang
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
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33
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Heterodinuclear Diphosphane-Bridged Iron–Platinum Diyne Complexes as Metalloligands for the Assembly of Polymetallic Systems (Fe, Pt, Co). J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01555-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Roy SS, Patra SK. Synthesis and Characterization of Diferrocenyl Conjugates: Varying π-Conjugated Bridging Ligands and its Consequence on Electrochemical Communication. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sourav Saha Roy
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 Kharagpur India
| | - Sanjib K. Patra
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 Kharagpur India
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35
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Nemdili H, Zouchoune B, Saber Zendaoui M, Ferhati A. Structural, bonding and redox properties of 34-electron bimetallic complexes and their oxidized 32- and 33-electron and reduced 35- and 36-electron derivatives containing the indenyl fused π-system: A DFT overview. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.12.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sil A, Ghosh U, Mishra VK, Mishra S, Patra SK. Synthesis, Structure, Electrochemical, and Spectroscopic Properties of Hetero-Bimetallic Ru(II)/Fe(II)-Alkynyl Organometallic Complexes. Inorg Chem 2019; 58:1155-1166. [PMID: 30614701 DOI: 10.1021/acs.inorgchem.8b02440] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amit Sil
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Utsav Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Vipin Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Sanjib K. Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
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Pastor-Medrano J, Rodríguez-Raya FR, Bernabé-Pablo E, Mireles-Chávez DA, Jancik V, Martínez-Otero D, Moya-Cabrera M. Metal-directed self-assembly of transition metal heterometallascorpionates. Dalton Trans 2019; 48:6571-6580. [DOI: 10.1039/c9dt00683d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3d metal-based heterometallascorpionates featuring high-spin Co(ii) and Ni(ii) centers were prepared and their structural, magnetic and electronic properties investigated.
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Affiliation(s)
| | | | - Erandi Bernabé-Pablo
- Universidad Nacional Autónoma de México
- Instituto de Química
- Ciudad Universitaria
- Ciudad de México
- Mexico
| | - Daniel A. Mireles-Chávez
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM
- Toluca
- Mexico
- Facultad de Química
- Universidad Autónoma del Estado de México
| | - Vojtech Jancik
- Universidad Nacional Autónoma de México
- Instituto de Química
- Ciudad Universitaria
- Ciudad de México
- Mexico
| | - Diego Martínez-Otero
- Universidad Nacional Autónoma de México
- Instituto de Química
- Ciudad Universitaria
- Ciudad de México
- Mexico
| | - Mónica Moya-Cabrera
- Universidad Nacional Autónoma de México
- Instituto de Química
- Ciudad Universitaria
- Ciudad de México
- Mexico
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Li ZJ, Shen JJ, Shao JY, Zhong YW. Substituent Effects on the Electrochemistry and Electronic Coupling of Terphenyl-Bridged Cyclometalated Ruthenium-Amine Conjugated Complexes. ACS OMEGA 2018; 3:16744-16752. [PMID: 31458305 PMCID: PMC6643824 DOI: 10.1021/acsomega.8b03058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 11/28/2018] [Indexed: 06/10/2023]
Abstract
Six terphenyl-bridged cyclometalated ruthenium-amine conjugated complexes 4(PF6)-9(PF6) were synthesized and studied. Three different substituents, methoxy, methyl, and chloro, were used to vary the electronic nature of the amine unit, and two terminal ligands 2,2':6',2″-terpyridine (tpy) and trimethyl-4,4',4″-tricarboxylate-2,2':6',2″-terpyridine (Me3tctpy) were used to tune the electronic nature of the ruthenium component. All complexes, except 7(PF6) with the methoxy substituent and Me3tctpy ligand, display two well-separated redox waves in the potential range of +0.5 to +1.1 V versus Ag/AgCl. The regular electrochemical changes of these complexes help to establish the oxidation order of ruthenium and amine and hence of the direction of the electron transfer in odd-electron state. The degree of electronic coupling was estimated by analyzing the donor-to-acceptor charge transfer band in the near-infrared region obtained by oxidative spectroelectrochemical measurements. Electron paramagnetic resonance analyses and density functional theory calculations were performed on the one-electron oxidized forms to obtain information on the spin distribution of these complexes.
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Affiliation(s)
- Zhi-Juan Li
- CAS
Laboratory of Photochemistry, Beijing National Laboratory for Molecular
Sciences, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese
Academy of Sciences, Beijing 100190, China
- School
of Chemical Sciences, University of Chinese
Academy of Sciences, Beijing 100049, China
| | - Jun-Jian Shen
- CAS
Laboratory of Photochemistry, Beijing National Laboratory for Molecular
Sciences, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese
Academy of Sciences, Beijing 100190, China
| | - Jiang-Yang Shao
- CAS
Laboratory of Photochemistry, Beijing National Laboratory for Molecular
Sciences, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese
Academy of Sciences, Beijing 100190, China
| | - Yu-Wu Zhong
- CAS
Laboratory of Photochemistry, Beijing National Laboratory for Molecular
Sciences, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese
Academy of Sciences, Beijing 100190, China
- School
of Chemical Sciences, University of Chinese
Academy of Sciences, Beijing 100049, China
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Muraoka H, Ozawa K, Ogawa S. Electrochemical studies of the multi-step multi-electron redox process of tetraferrocenyloligothiophenes with electron donor and acceptor abilities. HETEROATOM CHEMISTRY 2018. [DOI: 10.1002/hc.21455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hiroki Muraoka
- Department of Chemistry and Biological Sciences; Faculty of Science and Engineering; Iwate University; Morioka Iwate Japan
| | - Kouhei Ozawa
- Department of Chemistry and Biological Sciences; Faculty of Science and Engineering; Iwate University; Morioka Iwate Japan
| | - Satoshi Ogawa
- Department of Chemistry and Biological Sciences; Faculty of Science and Engineering; Iwate University; Morioka Iwate Japan
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Rossi S, Bisello A, Cardena R, Santi S. Testing the Conjugative Properties of Benzodithiophene and Benzotrithiophene in Charge Transfer Multi(ferrocenyl) Systems. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00537] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Serena Rossi
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Annalisa Bisello
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Roberta Cardena
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Saverio Santi
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
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41
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The role of the anion in the charge transfer properties of mixed-valent biferrocene. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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42
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Saha Roy S, Sil A, Giri D, Roy Chowdhury S, Mishra S, Patra SK. Diruthenium(ii)-capped oligothienylethynyl bridged highly soluble organometallic wires exhibiting long-range electronic coupling. Dalton Trans 2018; 47:14304-14317. [PMID: 29967914 DOI: 10.1039/c8dt01818a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organometallic molecular wires with π-conjugation along their molecular backbones are of considerable interest for application in molecular-scale electronics. In this regard, thienylethynyl-based π-conjugated oligomers of three, five and seven thienylethynyl units with -C[triple bond, length as m-dash]C-H termini have been successfully synthesized through stepwise Pd(0)/Cu(i)-catalyzed Sonogashira coupling. The corresponding highly soluble diruthenium(ii) diacetylide complexes (O1-Ru2, O3-Ru2, O5-Ru2 and O7-Ru2, respectively) have been prepared by the reaction of cis-Ru(dppe)2Cl2 and NaPF6 in DCM with the corresponding rigid rod-like thienylethynyl oligomers with one, three, five and seven thienylethynyl π-conjugated segments containing alkynyl termini (O1, O3, O5 and O7). These Ru(ii)-Cl capped diacetylide complexes have been further functionalized by incorporating a phenylacetynyl moiety to afford [Ru(ii)-C[triple bond, length as m-dash]C-Ph]-capped diacetylide organometallic wires (O1-Ru2-Ph, O3-Ru2-Ph, O5-Ru2-Ph and O7-Ru2-Ph). The photophysical properties of the highly soluble thienylethynyl-based oligomers and Ru(ii)-organometallic wires have been explored to understand their electronic properties. Electrochemical studies of the binuclear ruthenium(ii)-alkynyl complexes showed highly interesting results, revealing long-range electrochemical communication between the two remote Ru(ii) termini connected even with five and seven thienylethynyl units. DFT computational studies further support the long range electrochemical communication between the redox active metal termini through heavy participation of the thienylethynyl bridge in the corresponding mono-oxidized mixed valence species of the organometallic wire-like complexes.
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Affiliation(s)
- Sourav Saha Roy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, WB, India.
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Neu JP, Di Martino-Fumo P, Oelkers B, Sun Y, Neuba A, Gerhards M, Thiel WR. Playing with Pearson's concept: orthogonally functionalized 1,4-diaza-1,3-butadienes leading to heterobinuclear complexes. Dalton Trans 2018; 47:9643-9656. [PMID: 29974118 DOI: 10.1039/c8dt01523f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
By reacting 1,2-diketones and ortho- diphenylphosphinoyl aniline in the presence of zinc(ii) as a templating agent, cationic zinc(ii) complexes of novel phosphine oxide functionalized 1,4-diaza-1,3-butadiene ligands are acessible. Herein the zinc(ii) site is bound to all four donor atoms of the ligand. Depending on the flexibility of the 1,4-diaza-1,3-butadiene backbone, the bonds to zinc(ii) from the 1,4-diaza-1,3-butadiene donors can be broken. Reaction with oxalate cleaves the zinc(ii) coordination completely and makes accessible the free ligands possessing orthogonal (N,N: soft; O,O: hard) sets of donor sites. This allows for the specific coordination of soft and hard Lewis acids and thus for the generation of heterobimetallic complexes, here exemplarily shown for the combination of palladium(ii) (soft) and zinc(ii) (hard) centres.
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Affiliation(s)
- J P Neu
- Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße 54, 67663 Kaiserslautern, Germany.
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Akiyama M, Tsuchiya Y, Ishii A, Hasegawa M, Kurashige Y, Nozaki K. Phosphorescence Resulting from Interaction between Two Non-equivalent Metals on a Helical π-Conjugated Surface. Chem Asian J 2018; 13:1902-1905. [PMID: 29968284 DOI: 10.1002/asia.201800780] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Indexed: 11/11/2022]
Abstract
A [7]helicene bis-ruthenium complex, with one ruthenium atom bound to the cyclopentadienyl (Cp) ring and the other coordinated to the arene ring at the edge of the helicene, was synthesized. This complex showed phosphorescence both in butyronitrile (Φ=31 %, 77 K) and in the solid state (Φ=18 %, 77 K). The two non-equivalent ruthenium metal atoms, attached to the helicene ligand, interact with each other upon photoabsorption and emission.
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Affiliation(s)
- Midori Akiyama
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Yuto Tsuchiya
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5258, Japan
| | - Ayumi Ishii
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5258, Japan
- Japan Science and Technology, Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Miki Hasegawa
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5258, Japan
| | - Yuki Kurashige
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwakecho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Kyoko Nozaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
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Schnabel TM, Melcher D, Brandhorst K, Bockfeld D, Tamm M. Unraveling the Mechanism of 1,3-Diyne Cross-Metathesis Catalyzed by Silanolate-Supported Tungsten Alkylidyne Complexes. Chemistry 2018; 24:9022-9032. [PMID: 29676817 DOI: 10.1002/chem.201801651] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Tobias M. Schnabel
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Daniel Melcher
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Kai Brandhorst
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Dirk Bockfeld
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie; Technische Universität Braunschweig; Hagenring 30 38106 Braunschweig Germany
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47
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Stability and possible multiple metal-metal bonding in tetranuclear sandwich complexes of cyclooctatetraene ligand. Struct Chem 2018. [DOI: 10.1007/s11224-018-1077-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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48
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Yan XL, Zhang N, Hao ZQ, Ma ZH, Han ZG, Zheng XZ, Lin J. Synthesis and catalytic reactivity in Friedel–Crafts acylations of monobridged bis(cyclopentadienyl)molybdenum(I) carbonyl complexes. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.03.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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