1
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Salzburger M, Hütter M, van der Linde C, Ončák M, Beyer MK. Master equation modeling of blackbody infrared radiative dissociation (BIRD) of hydrated peroxycarbonate radical anions. J Chem Phys 2024; 160:134304. [PMID: 38557850 DOI: 10.1063/5.0200253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 03/15/2024] [Indexed: 04/04/2024] Open
Abstract
Molecular cluster ions, which are stored in an electromagnetic trap under ultra-high vacuum conditions, undergo blackbody infrared radiative dissociation (BIRD). This process can be simulated with master equation modeling (MEM), predicting temperature-dependent dissociation rate constants, which are very sensitive to the dissociation energy. We have recently introduced a multiple-well approach for master equation modeling, where several low-lying isomers are taken into account. Here, we experimentally measure the BIRD of CO4●-(H2O)1,2 and model the results with a slightly modified multiple-well MEM. In the experiment, we exclusively observe loss of water from CO4●-(H2O), while the BIRD of CO4●-(H2O)2 leads predominantly to loss of carbon dioxide, with water loss occurring to a lesser extent. The MEM of two competing reactions requires empirical scaling factors for infrared intensities and the sum of states of the loose transition states employed in the calculation of unimolecular rate constants so that the simulated branching ratio matches the experiment. The experimentally derived binding energies are ΔH0(CO4●--H2O) = 45 ± 3 kJ/mol, ΔH0(CO4●-(H2O)-H2O) = 41 ± 3 kJ/mol, and ΔH0(CO2-O2●-(H2O)2) = 37 ± 3 kJ/mol. Quantum chemical calculations on the CCSD(T)/aug-cc-pVTZ//CCSD/aug-cc-pVDZ level, corrected for the basis set superposition error, yield binding energies that are 2-5 kJ/mol higher than experiment, within error limits of both experiment and theory. The relative activation energies for the two competing loss channels are as well fully consistent with theory.
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Affiliation(s)
- Magdalena Salzburger
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Michael Hütter
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Christian van der Linde
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Milan Ončák
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Martin K Beyer
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
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2
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van der Linde C, Ončák M, Cunningham EM, Tang WK, Siu CK, Beyer MK. Surface or Internal Hydration - Does It Really Matter? JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023; 34:337-354. [PMID: 36744598 PMCID: PMC9983018 DOI: 10.1021/jasms.2c00290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 01/26/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
The precise location of an ion or electron, whether it is internally solvated or residing on the surface of a water cluster, remains an intriguing question. Subtle differences in the hydrogen bonding network may lead to a preference for one or the other. Here we discuss spectroscopic probes of the structure of gas-phase hydrated ions in combination with quantum chemistry, as well as H/D exchange as a means of structure elucidation. With the help of nanocalorimetry, we look for thermochemical signatures of surface vs internal solvation. Examples of strongly size-dependent reactivity are reviewed which illustrate the influence of surface vs internal solvation on unimolecular rearrangements of the cluster, as well as on the rate and product distribution of ion-molecule reactions.
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Affiliation(s)
- Christian van der Linde
- Institut
für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020Innsbruck, Austria
| | - Milan Ončák
- Institut
für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020Innsbruck, Austria
| | - Ethan M. Cunningham
- Institut
für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020Innsbruck, Austria
| | - Wai Kit Tang
- Institute
of Research Management and Services (IPPP), Research and Innovation
Management Complex, University of Malaya, Kuala Lumpur50603, Malaysia
| | - Chi-Kit Siu
- Department
of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, PR China
| | - Martin K. Beyer
- Institut
für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020Innsbruck, Austria
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3
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Masese T, Kanyolo GM, Miyazaki Y, Ito M, Taguchi N, Rizell J, Tachibana S, Tada K, Huang Z, Alshehabi A, Ubukata H, Kubota K, Yoshii K, Senoh H, Tassel C, Orikasa Y, Kageyama H, Saito T. Honeycomb-Layered Oxides With Silver Atom Bilayers and Emergence of Non-Abelian SU(2) Interactions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204672. [PMID: 36575151 PMCID: PMC9951339 DOI: 10.1002/advs.202204672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Honeycomb-layered oxides with monovalent or divalent, monolayered cationic lattices generally exhibit myriad crystalline features encompassing rich electrochemistry, geometries, and disorders, which particularly places them as attractive material candidates for next-generation energy storage applications. Herein, global honeycomb-layered oxide compositions, Ag2 M2 TeO6 ( M = Ni , Mg , etc $M = \rm Ni, Mg, etc$ .) exhibiting Ag $\rm Ag$ atom bilayers with sub-valent states within Ag-rich crystalline domains of Ag6 M2 TeO6 and Ag $\rm Ag$ -deficient domains of Ag 2 - x Ni 2 TeO 6 ${\rm Ag}_{2 - x}\rm Ni_2TeO_6$ ( 0 < x < 2 $0 < x < 2$ ). The Ag $\rm Ag$ -rich material characterized by aberration-corrected transmission electron microscopy reveals local atomic structural disorders characterized by aperiodic stacking and incoherency in the bilayer arrangement of Ag $\rm Ag$ atoms. Meanwhile, the global material not only displays high ionic conductivity but also manifests oxygen-hole electrochemistry during silver-ion extraction. Within the Ag $\rm Ag$ -rich domains, the bilayered structure, argentophilic interactions therein and the expected Ag $\rm Ag$ sub-valent states ( 1 / 2 + , 2 / 3 + $1/2+, 2/3+$ , etc.) are theoretically understood via spontaneous symmetry breaking of SU(2)× U(1) gauge symmetry interactions amongst 3 degenerate mass-less chiral fermion states, justified by electron occupancy of silver 4 d z 2 $4d_{z^2}$ and 5s orbitals on a bifurcated honeycomb lattice. This implies that bilayered frameworks have research applications that go beyond the confines of energy storage.
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Affiliation(s)
- Titus Masese
- Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST)1‐8‐31 MidorigaokaIkedaOsaka563‐8577Japan
- AIST‐Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM‐OIL)Sakyo‐kuKyoto606‐8501Japan
| | - Godwill Mbiti Kanyolo
- Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST)1‐8‐31 MidorigaokaIkedaOsaka563‐8577Japan
- Department of Engineering ScienceThe University of Electro‐Communications1‐5‐1 ChofugaokaChofuTokyo182‐8585Japan
| | - Yoshinobu Miyazaki
- Tsukuba LaboratorySumika Chemical Analysis Service (SCAS), Ltd.TsukubaIbaraki300‐3266Japan
| | - Miyu Ito
- Tsukuba LaboratorySumika Chemical Analysis Service (SCAS), Ltd.TsukubaIbaraki300‐3266Japan
| | - Noboru Taguchi
- Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST)1‐8‐31 MidorigaokaIkedaOsaka563‐8577Japan
| | - Josef Rizell
- Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST)1‐8‐31 MidorigaokaIkedaOsaka563‐8577Japan
- Department of PhysicsChalmers University of TechnologySE‐412GöteborgSweden
| | - Shintaro Tachibana
- Graduate School of Life SciencesRitsumeikan University1‐1‐1 Noji‐higashiKusatsuShiga525‐8577Japan
| | - Kohei Tada
- Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST)1‐8‐31 MidorigaokaIkedaOsaka563‐8577Japan
| | - Zhen‐Dong Huang
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM)Nanjing University of Posts and Telecommunications (NUPT)Nanjing210023China
| | - Abbas Alshehabi
- Department of Industrial EngineeringNational Institute of Technology (KOSEN)Ibaraki College, 866 NakaneHitachinakaIbaraki312‐8508Japan
| | - Hiroki Ubukata
- Department of Energy and Hydrocarbon ChemistryGraduate School of EngineeringKyoto UniversityNishikyo‐kuKyoto615‐8510Japan
| | - Keigo Kubota
- Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST)1‐8‐31 MidorigaokaIkedaOsaka563‐8577Japan
| | - Kazuki Yoshii
- Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST)1‐8‐31 MidorigaokaIkedaOsaka563‐8577Japan
| | - Hiroshi Senoh
- Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST)1‐8‐31 MidorigaokaIkedaOsaka563‐8577Japan
| | - Cédric Tassel
- Department of Energy and Hydrocarbon ChemistryGraduate School of EngineeringKyoto UniversityNishikyo‐kuKyoto615‐8510Japan
| | - Yuki Orikasa
- Graduate School of Life SciencesRitsumeikan University1‐1‐1 Noji‐higashiKusatsuShiga525‐8577Japan
| | - Hiroshi Kageyama
- Department of Energy and Hydrocarbon ChemistryGraduate School of EngineeringKyoto UniversityNishikyo‐kuKyoto615‐8510Japan
| | - Tomohiro Saito
- Tsukuba LaboratorySumika Chemical Analysis Service (SCAS), Ltd.TsukubaIbaraki300‐3266Japan
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Triptow J, Meijer G, Fielicke A, Dopfer O, Green M. Comparison of Conventional and Nonconventional Hydrogen Bond Donors in Au - Complexes. J Phys Chem A 2022; 126:3880-3892. [PMID: 35687835 PMCID: PMC9234979 DOI: 10.1021/acs.jpca.2c02725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although gold has become a well-known nonconventional hydrogen bond acceptor, interactions with nonconventional hydrogen bond donors have been largely overlooked. In order to provide a better understanding of these interactions, two conventional hydrogen bonding molecules (3-hydroxytetrahydrofuran and alaninol) and two nonconventional hydrogen bonding molecules (fenchone and menthone) were selected to form gas-phase complexes with Au-. The Au-[M] complexes were investigated using anion photoelectron spectroscopy and density functional theory. Au-[fenchone], Au-[menthone], Au-[3-hydroxyTHF], and Au-[alaninol] were found to have vertical detachment energies of 2.71 ± 0.05, 2.76 ± 0.05, 3.01 ± 0.03, and 3.02 ± 0.03 eV, respectively, which agree well with theory. The photoelectron spectra of the complexes resemble the spectrum of Au- but are blueshifted due to the electron transfer from Au- to M. With density functional theory, natural bond orbital analysis, and atoms-in-molecules analysis, we were able to extend our comparison of conventional and nonconventional hydrogen bonding to include geometric and electronic similarities. In Au-[3-hydroxyTHF] and Au-[alaninol], the hydrogen bonding comprised of Au-···HO as a strong, primary hydrogen bond, with secondary stabilization by weaker Au-···HN or Au-···HC hydrogen bonds. Interestingly, the Au-···HC bonds in Au-[fenchone] and Au-[menthone] can be characterized as hydrogen bonds, despite their classification as nonconventional hydrogen bond donors.
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Affiliation(s)
- Jenny Triptow
- Fritz-Haber-Institut der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Gerard Meijer
- Fritz-Haber-Institut der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - André Fielicke
- Fritz-Haber-Institut der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Otto Dopfer
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Mallory Green
- Fritz-Haber-Institut der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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5
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Fan YW, Wang HQ, Li HF. Microsolvation of Co - in water: Density functional theory calculations coupled with stochastic kicking method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118935. [PMID: 32971345 DOI: 10.1016/j.saa.2020.118935] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/28/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
The hydrated clusters [Formula: see text] (n = 1-4) in gas phase are studied by density functional theory calculations (DFT) coupled with stochastic kicking method. The global minimum structure of [Formula: see text] exhibits low-symmetry pattern since only one H atom of water molecules interact with Co- ion and other ones associate with a network of hydrogen bonds. The Co- ion prefers to locate at vertex site of the water molecular clusters in such way to reduce the repulsion with O atom. These results elucidate the formation of these low-lying isomers are determined by the delicate balance between ion-water and water-water interactions.
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Affiliation(s)
- Yi-Wei Fan
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Huai-Qian Wang
- College of engineering, Huaqiao University, Quanzhou 362021, China.
| | - Hui-Fang Li
- College of engineering, Huaqiao University, Quanzhou 362021, China
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6
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Abdo YA, Tschumper GS. Competition between Solvent-Solvent and Solvent-Solute Interactions in the Microhydration of the Hexafluorophosphate Anion, PF 6-(H 2O) n=1,2. J Phys Chem A 2020; 124:8744-8752. [PMID: 32993285 DOI: 10.1021/acs.jpca.0c06466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study systematically examines the interactions of the hexafluorophosphate anion (PF6-) with one or two solvent water molecules (PF6-(H2O)n where n = 1, 2). Full geometry optimizations and subsequent harmonic vibrational frequency computations are performed on each stationary point using a variety of common density functional theory methods (B3LYP, B3LYP-D3, M06-2X, and ωB97XD) and the MP2 and CCSD(T) ab initio methods with a triple-ζ correlation consistent basis set augmented with diffuse functions on all non-hydrogen atoms (cc-pVTZ for H and aug-cc-pVTZ for P, O, and F; denoted as haTZ). Five new stationary points of PF6-(H2O)2 have been identified, one of which has an electronic energy of approximately 2 kcal mol-1 lower than the only other dihydrate structure reported for this system. The CCSD(T) computations also reveal that the detailed interactions between PF6- and H2O can be quite difficult to model reliably, with some methods struggling to correctly characterize stationary points for n = 1 or accurately reproduce the vibrational frequency shifts induced by the formation of the hydrated complex. Although the interactions between the solvent and ionic solute are quite strong (CCSD(T) electronic dissociation energy ≈10 kcal mol-1 for the monohydrate minimum), the solvent-solvent interactions in the lowest-energy PF6-(H2O)2 minimum give rise to appreciable cooperative effects not observed in the other dihydrate minima. In addition, this newly identified structure exhibits the largest frequency shifts in the OH stretching vibrations for the waters of hydration (with Δω exceeding -100 cm-1 relative to the values for an isolated H2O molecule).
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Affiliation(s)
- Yasmeen A Abdo
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677-1848, United States
| | - Gregory S Tschumper
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677-1848, United States
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7
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Wang Y, Han C, Fei Z, Dong C, Liu H. Probing the Hydrogen Bonding in Microsolvated Clusters of Au 1,2-(Solv) n (Solv = C 2H 5OH, n-C 3H 7OH; n = 1-3 for Au -; n =1 for Au 2-). J Phys Chem A 2020; 124:5590-5598. [PMID: 32551619 DOI: 10.1021/acs.jpca.0c03746] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The microsolvation of gold anions in different alcohol solvents is demonstrated by the combination of anion photoelectron spectroscopy and quantum chemical calculations on the Au1,2-(Solv)n (Solv = C2H5OH, n-C3H7OH; n = 1-3 for Au-; n = 1 for Au2-). The microsolvation structures of these clusters and their corresponding neutrals are assigned by comparing calculations with experiments. In terms of overall regularity, the increasing solvation number (n) and carbon chain extension both can increase the stability of the anion. When n ≥ 2, these clusters have low-energy isomers, where conventional hydrogen bonds (HBs) compete with nonconventional HBs (NHBs). NHBs are dominant when n ≤ 2 and when n is increased, vice versa. Interestingly, a variety of theoretical calculations show that after the hydroxy H atom of the ethanol molecule forms a weak ionic HB with Au-, there are two lowest conformations of ethanol, trans and gauche, which could be coexisting in the molecular beams. Some theoretical methods also suggest that the gauche isomer is more stable than the trans one, which indicates that Au- may exist as a gold gauche effect similar to fluorine.
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Affiliation(s)
- Yongtian Wang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Changcai Han
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zejie Fei
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, P. R. China
| | - Changwu Dong
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, P. R. China
| | - Hongtao Liu
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, P. R. China
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8
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Thompson MC, Ramsay J, Weber JM. Interaction of CO2 with Atomic Manganese in the Presence of an Excess Negative Charge Probed by Infrared Spectroscopy of [Mn(CO2)n]− Clusters. J Phys Chem A 2017; 121:7534-7542. [DOI: 10.1021/acs.jpca.7b06870] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael C. Thompson
- JILA and Department of Chemistry
and Biochemistry, University of Colorado, Boulder, Colorado 80309-0440, United States
| | - Jacob Ramsay
- JILA and Department of Chemistry
and Biochemistry, University of Colorado, Boulder, Colorado 80309-0440, United States
| | - J. Mathias Weber
- JILA and Department of Chemistry
and Biochemistry, University of Colorado, Boulder, Colorado 80309-0440, United States
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9
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Groenewald F, Raubenheimer HG, Dillen J, Esterhuysen C. Gold setting the “gold standard” among transition metals as a hydrogen bond acceptor – a theoretical investigation. Dalton Trans 2017; 46:4960-4967. [DOI: 10.1039/c7dt00329c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
MP2/aug-cc-pVTZ-pp calculations show that the Au(i) atom of dimethylaurate behaves as a hydrogen-bond acceptor to a range of hydrogen-bond donors.
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Affiliation(s)
- Ferdinand Groenewald
- Department of Chemistry and Polymer Science
- University of Stellenbosch
- Stellenbosch
- South Africa
| | - Helgard G. Raubenheimer
- Department of Chemistry and Polymer Science
- University of Stellenbosch
- Stellenbosch
- South Africa
| | - Jan Dillen
- Department of Chemistry and Polymer Science
- University of Stellenbosch
- Stellenbosch
- South Africa
| | - Catharine Esterhuysen
- Department of Chemistry and Polymer Science
- University of Stellenbosch
- Stellenbosch
- South Africa
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10
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Groenewald F, Dillen J, Raubenheimer HG, Esterhuysen C. Preparing Gold(I) for Interactions with Proton Donors: The Elusive [Au]⋅⋅⋅HO Hydrogen Bond. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508358] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ferdinand Groenewald
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 Matieland 7602 South Africa
| | - Jan Dillen
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 Matieland 7602 South Africa
| | - Helgard G. Raubenheimer
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 Matieland 7602 South Africa
| | - Catharine Esterhuysen
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 Matieland 7602 South Africa
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11
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Groenewald F, Dillen J, Raubenheimer HG, Esterhuysen C. Preparing Gold(I) for Interactions with Proton Donors: The Elusive [Au]⋅⋅⋅HO Hydrogen Bond. Angew Chem Int Ed Engl 2015; 55:1694-8. [DOI: 10.1002/anie.201508358] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 10/27/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Ferdinand Groenewald
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 Matieland 7602 South Africa
| | - Jan Dillen
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 Matieland 7602 South Africa
| | - Helgard G. Raubenheimer
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 Matieland 7602 South Africa
| | - Catharine Esterhuysen
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 Matieland 7602 South Africa
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12
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Chen Y, Wang F. Theoretical study of interactions between electron-deficient arenes and coinage metal anions. J Mol Model 2015; 21:38. [PMID: 25663520 DOI: 10.1007/s00894-015-2584-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 01/19/2015] [Indexed: 11/25/2022]
Abstract
The binding behavior of coinage metal anions with some electron-deficient arenes has been investigated by MP2 calculations, and the character of interactions in these complexes has been examined by NBO analysis. The results indicate that coinage metal anions can interact with electron-deficient arenes to form anion-π, strong σ-type and hydrogen-bonding complexes. The σ-type structure is the global minimum for triazine, trifluorotriazine, hexafluorobenzene and tricyanobenzene, and the hydrogen-bonding structure is the global minimum for trifluorobenzene. There exist some differences in the stability of anion-π complexes for coinage metal anions: the anion-π complexes of Au(-) are minima expect for triazine complex; the anion-π complexes of Ag(-) are minima expect for tricyanobenzene complex; and the anion-π complexes of Cu(-) are not minima expect for trifluorobenzene complex. The binding strength of anion-π and hydrogen-bonding complexes for Au(-) is larger than that for Ag(-) and Cu(-), but the binding strength of σ complex displays a different sequence: Cu(-) > Au(-) > Ag(-). The binding behavior of coinage metal anions is more similar to that of F(-) than that of Cl(-) and Br(-). The relaxed potential energy surface scans for some selected systems have been performed to help understand the interactions between coinage metal anions with electron-deficient arenes.
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Affiliation(s)
- Yishan Chen
- School of Chemistry & Chemical Engineering, Qujing Normal University, Qujing, 655011, Yunnan, China,
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13
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Sanchéz-Lozano M, Mandado M, Pérez-Juste I, Hermida-Ramón JM. Theoretical vibrational Raman and surface-enhanced Raman scattering spectra of water interacting with silver clusters. Chemphyschem 2014; 15:4067-76. [PMID: 25263101 DOI: 10.1002/cphc.201402454] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Indexed: 11/11/2022]
Abstract
In this study, we analyzed the Raman spectrum of a water molecule adsorbed on a cluster of 20 silver atoms, and the plasmonic electromagnetic effect of the silver surface was also considered to give a theoretical prediction of the surface-enhanced Raman scattering spectrum. The calculations were performed at the density functional theory (DFT) level by using both frozen and unfrozen silver clusters. Two different models were used to consider the plasmonic enhancement; one of them was a modified classical (dipole) model and the other was the coupled perturbed Hartree-Fock method with excitation frequencies obtained from time-dependent DFT calculations and with proper detuning of these frequencies. The importance of small geometrical distortions of the silver surface in the orientation of the adsorbed water was shown. Moreover, it was shown how the symmetry of the transition dipole moment and the symmetry of the vibrational modes influence the Raman intensities of the SERS spectrum.
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Affiliation(s)
- Marta Sanchéz-Lozano
- Departamento de Química Física, Facultade de Química, Universidade de Vigo, Campus Lagoas Marcosende s/n, 36310 Vigo (Spain)
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14
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Qin Z, Cong R, Xie H, Liu Z, Wu X, Tang Z, Jiang L, Fan H. Photoelectron imaging and theoretical study on nascent hydrogen bond network in microsolvated clusters of Au- (CH3OH)n (n = 1-5). J Phys Chem A 2014; 118:3402-9. [PMID: 24773175 DOI: 10.1021/jp411411j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We first demonstrate the photoelectron spectroscopic evidence of the transition of two competitive solvation patterns in the Au(-)(CH3OH)n (n = 1-5) clusters. Quantum chemical calculations have been carried out to characterize the geometric structures, energy properties and hydrogen-bonded patterns, and to aid the spectral assignment. It has been found that the nonconventional hydrogen bonds dominate the small clusters (n = 1 and 2), whereas the conventional hydrogen bonds play more and more important role from n = 2 to n = 5. This finding provides concrete hydrogen bond network evolution of Au(-) surrounded by methanol molecules.
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Affiliation(s)
- Zhengbo Qin
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
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15
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Heine N, Kratz EG, Bergmann R, Schofield DP, Asmis KR, Jordan KD, McCoy AB. Vibrational Spectroscopy of the Water–Nitrate Complex in the O–H Stretching Region. J Phys Chem A 2014; 118:8188-97. [DOI: 10.1021/jp500964j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nadja Heine
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195, Berlin, Germany
| | - Eric G. Kratz
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Risshu Bergmann
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195, Berlin, Germany
| | - Daniel P. Schofield
- Department
of Chemistry and Biochemistry, Seattle Pacific University, Seattle, Washington 98119, United States
| | - Knut R. Asmis
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195, Berlin, Germany
- Wilhelm-Ostwald-Institut
für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany
| | - Kenneth D. Jordan
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Anne B. McCoy
- Department
of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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16
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Wu X, Tan K, Tang Z, Lu X. Hydrogen bonding in microsolvation: photoelectron imaging and theoretical studies on Au(x)(-)-(H2O)(n) and Au(x)(-)-(CH3OH)(n) (x = 1, 2; n = 1, 2) complexes. Phys Chem Chem Phys 2014; 16:4771-7. [PMID: 24469385 DOI: 10.1039/c3cp51851e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have combined photoelectron velocity-map imaging (VMI) spectroscopy and theoretical calculations to elucidate the geometry and energy properties of Aux(-)(Solv)n clusters with x = 1, 2; n = 1, 2; and Solv = H2O and CH3OH. Besides the blue-shifted vertical electron detachment energies (VDEs) of the complexes Au1,2(-)(Solv)n with the increase of the solvation number (n), we independently probed two distinct Au(-)(CH3OH)2 isomers, which combined with MP2/aug-cc-pVTZ(pp) calculations represent a competition between O···H-O hydrogen bonds (HBs) and Au···H-O nonconventional hydrogen bonds (NHBs). Complementary calculations provide the total binding energies of the low-energy isomers. Moreover, the relationship between the total binding energies and total VDEshift is discussed. We found that the Au1,2(-) anions exhibit halide-analogous behavior in microsolvation. These findings also demonstrate that photoelectron velocity map imaging spectroscopy with the aid of the ab initio calculations is an effective tool for investigating weak-interaction complexes.
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Affiliation(s)
- Xia Wu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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17
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Schmidbaur H, Raubenheimer HG, Dobrzańska L. The gold-hydrogen bond, Au-H, and the hydrogen bond to gold, Au∙∙∙H-X. Chem Soc Rev 2013; 43:345-80. [PMID: 23999756 DOI: 10.1039/c3cs60251f] [Citation(s) in RCA: 171] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the first part of this review, the characteristics of Au-H bonds in gold hydrides are reviewed including the data of recently prepared stable organometallic complexes with gold(I) and gold(III) centers. In the second part, the reports are summarized where authors have tried to provide evidence for hydrogen bonds to gold of the type Au∙∙∙H-X. Such interactions have been proposed for gold atoms in the Au(-I), Au(0), Au(I), and Au(III) oxidation states as hydrogen bonding acceptors and H-X units with X = O, N, C as donors, based on both experimental and quantum chemistry studies. To complement these findings, the literature was screened for examples with similar molecular geometries, for which such bonding has not yet been considered. In the discussion of the results, the recently issued IUPAC definitions of hydrogen bonding and the currently accepted description of agostic interactions have been used as guidelines to rank the Au∙∙∙H-X interactions in this broad range of weak chemical bonding. From the available data it appears that all the intra- and intermolecular Au∙∙∙H-X contacts are associated with very low binding energies and non-specific directionality. To date, the energetics have not been estimated, because there are no thermochemical and very limited IR/Raman and temperature-dependent NMR data that can be used as reliable references. Where conspicuous structural or spectroscopic effects have been observed, explanations other than hydrogen bonding Au∙∙∙H-X can also be advanced in most cases. Although numerous examples of short Au∙∙∙H-X contacts exist in the literature, it seems, at this stage, that these probably make only very minor contributions to the energy of a given system and have only a marginal influence on molecular conformations which so far have most often attracted researchers to this topic. Further, more dedicated investigations will be necessary before well founded conclusions can be drawn.
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Affiliation(s)
- Hubert Schmidbaur
- Department Chemie, Technische Universität München, Garching, Germany.
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18
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Kraus F, Schmidbaur H, Al-juaid SS. Tracing Hydrogen Bonding Au···H–C at Gold Atoms: A Case Study. Inorg Chem 2013; 52:9669-74. [DOI: 10.1021/ic4014762] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Florian Kraus
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, Garching 85747, Germany
| | - Hubert Schmidbaur
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, Garching 85747, Germany
- Chemistry Department, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Salih S. Al-juaid
- Chemistry Department, King Abdulaziz University, Jeddah, Saudi Arabia
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19
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Qin Z, Cong R, Wu X, Liu Z, Xie H, Tang Z, Jiang L, Fan H. Photoelectron velocity-map imaging spectroscopic and theoretical study on the reactivity of the gold atom toward CH3SH, CH3OH, and H2O. J Chem Phys 2013; 139:034315. [PMID: 23883035 DOI: 10.1063/1.4813631] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Photoelectron velocity-map imaging spectroscopy has been used to study the reaction of the anionic gold atom with the HR (R = SCH3, OCH3, OH) molecules. The solvated [Au···HR](-) and inserted [HAuR](-) products have been experimentally observed for R = SCH3, whereas only solvated [Au⋯HR](-) products were found for R = OCH3 and OH. This significant difference in the photoelectron spectra suggests the different reactivity of the Au(-) toward the CH3SH, CH3OH, and H2O molecules. Second order Møller-Plesset perturbation theory and coupled-cluster single double triple excitation calculations have been performed to aid the structural assignment of the spectra and to explore the reaction mechanism. Activation energies for the isomerizations of the solvated structures to the inserted ones in the Au(-)∕Au + HR reactions (R = OCH3 and OH) are predicted to be much higher than those for the Au(-)∕Au + CH3SH reactions, supporting the experimental observation. Theoretical calculations provide the evidence that the intriguing [HAuSCH3](-) product may be formed by the attachment of the electron onto the neutral HAuSCH3 species or the isomerization from the anionic [Au···HSCH3](-) one. These findings should be helpful for understanding the feature that the thiols are able to form the staple motifs, whereas CH3OH and H2O are not.
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Affiliation(s)
- Zhengbo Qin
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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20
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Knurr BJ, Adams CL, Weber JM. Infrared spectroscopy of hydrated naphthalene cluster anions. J Chem Phys 2012; 137:104303. [DOI: 10.1063/1.4750371] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Benjamin J. Knurr
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, USA
| | - Christopher L. Adams
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, USA
| | - J. Mathias Weber
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, USA
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21
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Castro M. Theoretical Study of Negatively Charged Fe––(H2O)n ≤ 6 Clusters. J Phys Chem A 2012; 116:5529-40. [DOI: 10.1021/jp212287j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Miguel Castro
- Departamento de Física y Química Teórica, DEPg. Facultad de Química, Universidad Nacional Autónoma de México, Del. Coyoacán, México D.F., C.P. 04510, México.
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22
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Chi C, Xie H, Li Y, Cong R, Zhou M, Tang Z. Photoelectron imaging of Ag(-)(H2O)x and AgOH(-)(H2O)y (x=1,2, y=0-4). J Phys Chem A 2011; 115:5380-6. [PMID: 21553859 DOI: 10.1021/jp202497x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The photoelectron images of Ag(-)(H(2)O)(x) (x=1,2) and AgOH(-)(H(2)O)(y) (y=0-4) are reported. The Ag(-)(H(2)O)(1,2) anionic complexes have similar characteristics to the other two coinage metal-water complexes that can be characterized as metal atomic anion solvated by water molecules with the electron mainly localized on the metal. The vibrationally well-resolved photoelectron spectrum allows the adiabatic detachment energy (ADE) and vertical detachment energy (VDE) of AgOH(-) to be determined as 1.18(2) and 1.24(2) eV, respectively. The AgOH(-) anion interacts more strongly with water molecules than the Ag(-) anion. The photoelectron spectra of Ag(-)(H(2)O)(x) and AgOH(-)(H(2)O)(y) show a gradual increase in ADE and VDE with increasing x and y due to the solvent stabilization.
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Affiliation(s)
- Chaoxian Chi
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
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23
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Bialach PM, Funk A, Weiler M, Gerhards M. IR spectroscopy on isolated Co(n)(alcohol)m cluster anions (n=1-4, m=1-3): structures and spin states. J Chem Phys 2011; 133:194304. [PMID: 21090859 DOI: 10.1063/1.3502096] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Isolated cobalt-alcohol cluster anions containing n=1-4 cobalt and m=1-3 alcohol molecules (alcohol=methanol, ethanol, propanol) are produced in a supersonic beam by using a laser ablation source. By applying IR photodissociation spectroscopy vibrational spectra in the OH stretching region are obtained. Several structures in different spin states are discussed for the (n,m) clusters. In comparison with density functional theory calculations applied to both the Co/alcohol clusters and the naked Co cluster anions, an unambiguous structural assignment is achieved. It turns out that structures are preferred with a maximum number of hydrogen bonds between the OH groups and the Co···Co units. These hydrogen bonds are typical for anionic species leading to an activation of the OH groups which is indicated by large red-shifts of the OH stretching frequencies compared to the naked alcohols. For each (n,m) cluster, the frequency shifts systematically with respect to the different alcohols, but the type of structure is identical for all alcohol ligands. The application of IR spectroscopy turns out to be an ideal tool not only as a probe for structures but also for spin states which significantly influence the predicted OH stretching frequencies.
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Affiliation(s)
- P M Bialach
- Fachbereich Chemie and Research Center OPTIMAS, TU Kaiserslautern, Erwin-Schroedinger-Straße 52, D-67663 Kaiserslautern, Germany
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24
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Marcum JC, Weber JM. Microhydration of Nitromethane Anions from Both a Solute and Solvent Perspective. J Phys Chem A 2010; 114:8933-8. [DOI: 10.1021/jp103682q] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jesse C. Marcum
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - J. Mathias Weber
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
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25
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26
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Bialach PM, Braun M, Lüchow A, Gerhards M. Structures of isolated Co2(alcohol)1 cluster anions. Phys Chem Chem Phys 2009; 11:10403-8. [DOI: 10.1039/b912703h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Schneider H, Vogelhuber KM, Schinle F, Stanton JF, Weber JM. Vibrational Spectroscopy of Nitroalkane Chains Using Electron Autodetachment and Ar Predissociation. J Phys Chem A 2008; 112:7498-506. [DOI: 10.1021/jp800124s] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Holger Schneider
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, and Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300, Austin, TX 78712-0165
| | - Kristen M. Vogelhuber
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, and Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300, Austin, TX 78712-0165
| | - Florian Schinle
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, and Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300, Austin, TX 78712-0165
| | - John F. Stanton
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, and Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300, Austin, TX 78712-0165
| | - J. Mathias Weber
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, and Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300, Austin, TX 78712-0165
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28
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29
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Kryachko ES, Remacle F. Implementation of simple logic gates on gold–ammonia bonding patterns in different charge states. Mol Phys 2008. [DOI: 10.1080/00268970701881170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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30
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Wu DY, Duan S, Liu XM, Xu YC, Jiang YX, Ren B, Xu X, Lin SH, Tian ZQ. Theoretical study of binding interactions and vibrational Raman spectra of water in hydrogen-bonded anionic complexes: (H2O)n- (n = 2 and 3), H2O...X- (X = F, Cl, Br, and I), and H2O...M- (M = Cu, Ag, and Au). J Phys Chem A 2008; 112:1313-21. [PMID: 18215023 DOI: 10.1021/jp0722105] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Binding interactions and Raman spectra of water in hydrogen-bonded anionic complexes have been studied by using the hybrid density functional theory method (B3LYP) and ab initio (MP2) method. In order to explore the influence of hydrogen bond interactions and the anionic effect on the Raman intensities of water, model complexes, such as the negatively charged water clusters ((H2O)n-, n = 2 and 3), the water...halide anions (H2O...X-, X = F, Cl, Br, and I), and the water-metal atom anionic complexes (H2O...M-, M = Cu, Ag, and Au), have been employed in the present calculations. These model complexes contained different types of hydrogen bonds, such as O-H...X-, O-H...M-, O-H...O, and O-H...e-. In particular, the last one is a dipole-bound electron involved in the anionic water clusters. Our results showed that there exists a large enhancement in the off-resonance Raman intensities of both the H-O-H bending mode and the hydrogen-bonded O-H stretching mode, and the enhancement factor is more significant for the former than for the latter. The reasons for these spectral properties can be attributed to the strong polarization effect of the proton acceptors (X-, M-, O, and e-) in these hydrogen-bonded complexes. We proposed that the strong Raman signal of the H-O-H bending mode may be used as a fingerprint to address the local microstructures of water molecules in the chemical and biological systems.
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Affiliation(s)
- De-Yin Wu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People Republic of China.
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31
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Schneider H, Weber JM. Infrared spectra of SF6-.(H2O)n (n=1-3): incipient reaction and delayed onset of water network formation. J Chem Phys 2007; 127:244310. [PMID: 18163678 DOI: 10.1063/1.2815808] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present data on the microsolvation of an extended charge distribution with SF(6)(-) as a model system. Infrared spectroscopy, aided by ab initio calculations, shows that the first two water molecules attach to the ion by a combination of single ionic H bonds, sharing one of the F atoms, and weak electrostatic interactions with other F atoms in the ion. No water-water bonds are formed at the dihydrate level, which is an unusual observation, given the strong propensity of water to form H-bonded networks. The onset of water networks occurs with the addition of the third water molecule. Moreover, the attachment of the first two water molecules considerably weakens the SF bond of the F atom involved in bonding to both ligands, indicating a possible mechanism for water-induced reactions.
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Affiliation(s)
- Holger Schneider
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
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32
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Kryachko ES, Remacle F. The gold-ammonia bonding patterns of neutral and charged complexes Aum0±1–(NH3)n. I. Bonding and charge alternation. J Chem Phys 2007; 127:194305. [DOI: 10.1063/1.2786996] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Schneider H, Vogelhuber KM, Schinle F, Weber JM. Aromatic Molecules in Anion Recognition: Electrostatics versus H-Bonding. J Am Chem Soc 2007; 129:13022-6. [DOI: 10.1021/ja073028k] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Holger Schneider
- Contribution from the JILA, University of Colorado and NIST, and Department of Chemistry, University of Colorado, Boulder, Colorado 80309
| | - Kristen M. Vogelhuber
- Contribution from the JILA, University of Colorado and NIST, and Department of Chemistry, University of Colorado, Boulder, Colorado 80309
| | - Florian Schinle
- Contribution from the JILA, University of Colorado and NIST, and Department of Chemistry, University of Colorado, Boulder, Colorado 80309
| | - J. Mathias Weber
- Contribution from the JILA, University of Colorado and NIST, and Department of Chemistry, University of Colorado, Boulder, Colorado 80309
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34
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Schneider H, Vogelhuber KM, Weber JM. Infrared spectroscopy of anionic hydrated fluorobenzenes. J Chem Phys 2007; 127:114311. [PMID: 17887841 DOI: 10.1063/1.2768348] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We investigate the structural motifs of anionic hydrated fluorobenzenes by infrared photodissociation spectroscopy and density functional theory. Our calculations show that all fluorobenzene anions under investigation are strongly distorted from the neutral planar molecular geometries. In the anions, different F atoms are no longer equivalent, providing structurally different binding sites for water molecules and giving rise to a multitude of low-lying isomers. The absorption bands for hexa- and pentafluorobenzene show that only one isomer for the respective monohydrate complexes is populated in our experiment. For C6F6.-H2O, we can assign these bands to an isomer where water forms a weak double ionic hydrogen bond with two F atoms in the ion, in accord with the results of Bowen et al. [J. Chem. Phys. 127, 014312 (2007), following paper.] The spectroscopic motif of the binary complexes changes slightly with decreasing fluorination of the aromatic anion. For dihydrated hexafluorobenzene anions, several isomers are populated in our experiments, some of which may be due to hydrogen bonding between water molecules.
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Affiliation(s)
- Holger Schneider
- JILA, NIST, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
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35
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Barbera J, Horvath S, Dribinski V, McCoy AB, Lineberger WC. Femtosecond dynamics of Cu(CD3OD). J Chem Phys 2007; 126:084307. [PMID: 17343448 DOI: 10.1063/1.2464103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report the femtosecond nuclear dynamics of Cu(CD3OD) van der Waals clusters, investigated using photodetachment-photoionization spectroscopy. Photodetachment of an electron from Cu-(CD3OD) with a 150 fs, 398 nm laser pulse produces a vibrationally excited neutral complex that undergoes ligand reorientation and dissociation. The dynamics of Cu(CD3OD) on the neutral surface is interrogated by delayed femtosecond resonant two-photon ionization. Analysis of the resulting time-dependent signals indicates that the nascent Cu(CD3OD) complex dissociates on two distinct time scales of 3 and 30 ps. To understand the origins of the observed time scales, complimentary studies were performed. These included measurement of the photoelectron spectrum of Cu-(CD3OD) as well as a series of calculations of the structure and the electronic and vibrational energies of the anion and neutral complexes. Based on the comparisons of the experimental and calculated results for Cu(CD3OD) with those obtained from earlier studies of Cu(H2O), we conclude that the 3 ps time scale reflects the energy transfer from the rotation of CD3OD in the complex to the dissociation coordinate, while the 30 ps time scale reflects the energy transfer from the excited methyl torsion states to the dissociation coordinate.
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Affiliation(s)
- Jack Barbera
- JILA, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
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36
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Asmis KR, Fielicke A, von Helden G, Meijer G. Chapter 8 Vibrational spectroscopy of gas-phase clusters and complexes. ATOMIC CLUSTERS: FROM GAS PHASE TO DEPOSITED 2007. [DOI: 10.1016/s1571-0785(07)12008-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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37
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Schneider H, Weber JM. Infrared spectra of HC2−∙(C2H2)n and O2−∙(C2H2)n clusters (n=2–5). J Chem Phys 2006; 125:094307. [PMID: 16965080 DOI: 10.1063/1.2347709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We study the solvation of HC2- and O2- with acetylene ligands by means of midinfrared photodissociation spectroscopy in the CH stretching region, monitoring C2H2 evaporation upon infrared photon absorption by the parent cluster ions. Our findings are interpreted with the help of density functional theory. The infrared spectra indicate that while the binding generally occurs through ionic H bonds, there are two different classes of ligands which differ in their binding strength. This holds true for both core ions, even though their electronic structures and charge distributions are very different.
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Affiliation(s)
- Holger Schneider
- Institut für Physikalische Chemie, Universität Karlsruhe, D-76128 Karlsruhe, Germany
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