1
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Uzunova EL. Cation binding of Li(I), Na(I) and Zn(II) to cobalt and iron sulphide clusters - electronic structure study. Phys Chem Chem Phys 2022; 24:20228-20238. [PMID: 35983907 DOI: 10.1039/d2cp02415b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The binding of alkaline (Li+ and Na+) and zinc (Zn2+) cations to mononuclear disulphides MS2 and to persulphides, containing an S-S bond, M(S2), to binuclear disulphides M2S2 and persulphides M2(S2) and to cubic tetranuclear sulphides M4S4 where M = Fe, Co, is examined by density functional theory with the B3LYP functional, and dispersion corrections were applied. For the small-sized clusters (up to two transition metal centres), the energy gaps between different configurations were verified by CCSD(T) calculations. Persulphides M(S2) are more stable than disulphides MS2 as bare clusters, upon carbonyl and chloride ligand coordination and upon cation binding (Li+, Na+, Zn2+). The one-electron reduction of alkali cations and two-electron reduction of Zn2+ reverses order of stability and the planar disulphides (MS2-reduced cation) become more stable; the energy gap disulphide to persulphide increases. In all reduced clusters, zinc ions form bonds with sulphur and with the transition metal centre (Co or Fe). Lithium cations also form bonds to cobalt or iron, but only in the M2S2 clusters, upon reduction. Energy barriers were calculated for the disulphide to persulphide reaction in the Zn-Co-S2 system in the isolated clusters (gas-phase), in water, acetonitrile and 1-Cl-hexane solution. Most significant decrease in the energy barriers were obtained with less-polar solvents, acetonitrile, and particularly, 1-Cl-hexane. In M4S4 clusters, the cations do not reach optimal coordination to the sulphur centres. The global minima of M2S2 clusters are antiferromagnetic; in the reduced Zn-M2S2 clusters, magnetic moment is induced at zinc centres as a result of charge transfer between Zn and Co or Zn and Fe.
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Affiliation(s)
- Ellie L Uzunova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G.Bonchev Str., block 11, Sofia 1113, Bulgaria.
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2
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da Silva RS, Ballester MY. Multireference configuration interaction calculations on the FeS molecule. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2096142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Ramon S. da Silva
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Maikel Y. Ballester
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
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3
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Amitouche F, Saad F, Tazibt S, Bouarab S, Vega A. Structural and Electronic Rearrangements in Fe 2S 2, Fe 3S 4, and Fe 4S 4 Atomic Clusters under the Attack of NO, CO, and O 2. J Phys Chem A 2019; 123:10919-10929. [PMID: 31794213 DOI: 10.1021/acs.jpca.9b08201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report results, based on density functional theory-generalized gradient approximation calculations, that shed light on how NO, CO, and O2 interact with Fe2S2, Fe3S4, and Fe4S4 clusters and how they modify their structural and electronic properties. The interest in these small iron sulfide clusters comes from the fact that they are at the protein cores and that elucidating fundamental aspects of their interaction with those light molecules which are known to modify their functionality may help in understanding complex behaviors in biological systems. CO and NO are found to bind molecularly, leading to moderate relaxations in the clusters, but nevertheless to changes in the spin-polarized electronic structure and related properties. In contrast, dissociative chemisorption of O2 is much more stable than molecular adsorption, giving rise to significant structural distortions, particularly in Fe4S4 that splits into two Fe2S2 subclusters. As a consequence, oxygen tends to strongly reduce the spin polarization in Fe and to weaken the Fe-Fe interaction inducing antiparallel couplings that, in the case of Fe4S4, clearly arise from indirect Fe-Fe exchange coupling mediated by O. The three molecules (particularly CO) enhance the stability of the iron-sulfur clusters. This increase is noticeably more pronounced for Fe2S2 than for the other iron-sulfur clusters of different compositions, a result that correlates with the fact that in recent experiments of CO reaction with FemSm (m = 1-4), the Fe2S2CO product results as a prominent one.
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Affiliation(s)
| | | | | | | | - Andrés Vega
- Departamento de Física Teórica, Atómica y Óptica , Universidad de Valladolid , Paseo Belèn 7 , E-47011 Valladolid , Spain
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4
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Yin S, Bernstein ER. Fe-V sulfur clusters studied through photoelectron spectroscopy and density functional theory. Phys Chem Chem Phys 2018; 20:22610-22622. [PMID: 30123901 DOI: 10.1039/c8cp03157f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron-vanadium sulfur cluster anions are studied by photoelectron spectroscopy (PES) at 3.492 eV (355 nm) and 4.661 eV (266 nm) photon energies, and by density functional theory (DFT) calculations. The structural properties, relative energies of different structural isomers, and the calculated first vertical detachment energies (VDEs) of different structural isomers for cluster anions FeVS1-3- and FemVnSm+n- (m + n = 3, 4; m > 0, n > 0) are investigated at a BPW91/TZVP theory level. The experimental first VDEs for these Fe-V sulfur clusters are reported. The most probable ground state structures and spin multiplicities for these clusters are tentatively assigned by comparing their theoretical and experiment first VDE values. For FeVS1-3- clusters, their first VDEs are generally observed to increase with the number of sulfur atoms from 1.45 eV to 2.86 eV. The NBO/HOMOs of the ground state of FeVS1-3- clusters are localized in a p orbital on a S atom; the partial charge distribution on the NBO/HOMO localized site of each cluster anion is responsible for the trend of their first VDEs. A less negative localized charge distribution is correlated with a higher first VDE. Structure and steric effect differences for FemVnSm+n- (m + n = 3, m > 0, n > 0) clusters are suggested to be responsible for their different first VDEs and properties. Two types of structural isomers are identified for FemVnSm+n- (m + n = 4, m > 0, n > 0) clusters: a tower structure isomer and a cubic structure isomer. The first VDEs for tower like isomers are generally higher than those for cubic like isomers of FemVnSm+n- (m + n = 4, m > 0, n > 0) clusters. Their first VDEs are can be understood through: (1) NBO/HOMO distributions, (2) structures (steric effects), and (3) partial charge numbers on the NBO/HOMO's localized sites. EBEs for excited state transitions for all Fe-V sulfur clusters are calculated employing OVGF and TDDFT approaches at the TZVP level. The OVGF approach for these Fe/V/S cluster anions is better for the higher transition energies than the TDDTF approach. The experimental and theoretical results for these Fe/V/S cluster anions are compared with their related pure iron sulfur cluster anions. Properties of the NBO/HOMO are essential for understanding and estimating the different first VDEs for Fe/V/S, and comparing them to those of the pure Fe/S cluster anions.
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Affiliation(s)
- Shi Yin
- Department of Chemistry, NSF ERC for Extreme Ultraviolet Science and Technology, Colorado State University, Fort Collins, CO 80523, USA.
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5
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Chen M, Wang GC, Shao LL, Yuan ZY, Qian X, Jing QS, Huang ZY, Xu DL, Yang SX. Strategic Design of Vacancy-Enriched Fe 1- xS Nanoparticles Anchored on Fe 3C-Encapsulated and N-Doped Carbon Nanotube Hybrids for High-Efficiency Triiodide Reduction in Dye-Sensitized Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31208-31224. [PMID: 29999302 DOI: 10.1021/acsami.8b08489] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A new class of hybrids with the unique electrocatalytic nanoarchitecture of Fe1- xS anchored on Fe3C-encapsulated and N-doped carbon nanotubes (Fe1- xS/Fe3C-NCNTs) is innovatively synthesized through a facile one-step carbonization-sulfurization strategy. The efficient synthetic protocols on phase structure evolution and dynamic decomposition behavior enable the production of the Fe1- xS/Fe3C-NCNT hybrid with advanced structural and electronic properties, in which the Fe vacancy-contained Fe1- xS showed the 3d metallic state electrons and an electroactive Fe in +2/+3 valence, and the electronic structure of the CNT was effectively modulated by the incorporated Fe3C and N, with the work function decreased from 4.85 to 4.63 eV. The meticulous structural, electronic, and compositional control unveils the unusual synergetic catalytic properties for the Fe1- xS/Fe3C-NCNT hybrid when developed as counter electrodes (CEs) for dye-sensitized solar cells (DSSCs), in which the Fe3C- and N-incorporated CNTs with reduced work function and increased charge density provide a highway for electron transport and facilitate the electron migration from Fe3C-NCNTs to ultrahigh active Fe1- xS with the electron-donating effect, and the Fe vacancy-enriched Fe1- xS nanoparticles exhibit ultrahigh I3- adsorption and charge-transfer ability. As a consequence, the DSSC based on the Fe1- xS/Fe3C-NCNT CE delivers a high power conversion efficiency of 8.67% and good long-term stability with a remnant efficiency of 8.00% after 168 h of illumination, superior to those of traditional Pt. Furthermore, the possible catalytic mechanism toward I3- reduction is creatively proposed based on the structure-activity correlation. In this work, the structure engineering, electronic modulation, and composition control opens up new possibilities in constructing the novel electrocatalytic nanoarchitecture for highly efficient CEs in DSSCs.
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Affiliation(s)
- Ming Chen
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | | | - Leng-Leng Shao
- Grirem Advanced Materials Co., Ltd, General Research Institute for Nonferrous Metals , Beijing 100088 , China
| | | | - Xing Qian
- College of Chemical Engineering , Fuzhou University , Fuzhou 350116 , China
| | - Qiang-Shan Jing
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Zhong-Yuan Huang
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
- Department of Chemistry , Xavier University of Louisiana , New Orleans , Louisiana 700125 , United States
| | - Dong-Li Xu
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Shuang-Xia Yang
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
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6
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Yin S, Bernstein ER. Photoelectron spectroscopy and density functional theory studies of (FeS) mH - (m = 2-4) cluster anions: effects of the single hydrogen. Phys Chem Chem Phys 2017; 20:367-382. [PMID: 29210391 DOI: 10.1039/c7cp07012h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single hydrogen containing iron hydrosulfide cluster anions (FeS)mH- (m = 2-4) are studied by photoelectron spectroscopy (PES) at 3.492 eV (355 nm) and 4.661 eV (266 nm) photon energies, and by Density Functional Theory (DFT) calculations. The structural properties, relative energies of different spin states and isomers, and the first calculated vertical detachment energies (VDEs) of different spin states for these (FeS)mH- (m = 2-4) cluster anions are investigated at various reasonable theory levels. Two types of structural isomers are found for these (FeS)mH- (m = 2-4) clusters: (1) the single hydrogen atom bonds to a sulfur site (SH-type); and (2) the single hydrogen atom bonds to an iron site (FeH-type). Experimental and theoretical results suggest such available different SH- and FeH-type structural isomers should be considered when evaluating the properties and behavior of these single hydrogen containing iron sulfide clusters in real chemical and biological systems. Compared to their related, respective pure iron sulfur (FeS)m- clusters, the first VDE trend of the diverse type (FeS)mH0,1- (m = 1-4) clusters can be understood through (1) the different electron distribution properties of their highest singly occupied molecular orbital employing natural bond orbital analysis (NBO/HSOMO), and (2) the partial charge distribution on the NBO/HSOMO localized sites of each cluster anion. Generally, the properties of the NBO/HSOMOs play the principal role with regard to the physical and chemical properties of all the anions. The change of cluster VDE from low to high is associated with the change in nature of their NBO/HSOMO from a dipole bound and valence electron mixed character, to a valence p orbital on S, to a valence d orbital on Fe, and to a valence p orbital on Fe or an Fe-Fe delocalized valence bonding orbital. For clusters having the same properties for NBO/HSOMOs, the partial charge distributions at the NBO/HSOMO localized sites additionally affect their VDEs: a more negative or less positive localized charge distribution is correlated with a lower first VDE. The single hydrogen in these (FeS)mH- (m = 2-4) cluster anions is suggested to affect their first VDEs through the different structure types (SH- or FeH-), the nature of the NBO/HSOMOs at the local site, and the value of partial charge number at the local site of the NBO/HSOMO.
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Affiliation(s)
- Shi Yin
- Department of Chemistry, NSF ERC for Extreme Ultraviolet Science and Technology, Colorado State University, Fort Collins, CO 80523, USA.
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7
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Sharkas K, Gagliardi L, Truhlar DG. Multiconfiguration Pair-Density Functional Theory and Complete Active Space Second Order Perturbation Theory. Bond Dissociation Energies of FeC, NiC, FeS, NiS, FeSe, and NiSe. J Phys Chem A 2017; 121:9392-9400. [PMID: 29136466 DOI: 10.1021/acs.jpca.7b09779] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigate the performance of multiconfiguration pair-density functional theory (MC-PDFT) and complete active space second-order perturbation theory for computing the bond dissociation energies of the diatomic molecules FeC, NiC, FeS, NiS, FeSe, and NiSe, for which accurate experimental data have become recently available [Matthew, D. J.; Tieu, E.; Morse, M. D. J. Chem. Phys. 2017, 146, 144310-144320]. We use three correlated participating orbital (CPO) schemes (nominal, moderate, and extended) to define the active spaces, and we consider both the complete active space (CAS) and the separated-pair (SP) schemes to specify the configurations included for a given active space. We found that the moderate SP-PDFT scheme with the tPBE on-top density functional has the smallest mean unsigned error (MUE) of the methods considered. This level of theory provides a balanced treatment of the static and dynamic correlation energies for the studied systems. This is encouraging because the method is low in cost even for much more complicated systems.
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Affiliation(s)
- Kamal Sharkas
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Laura Gagliardi
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Donald G Truhlar
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
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8
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Yin S, Bernstein ER. Photoelectron Spectroscopy and Density Functional Theory Studies of Iron Sulfur (FeS)m– (m = 2–8) Cluster Anions: Coexisting Multiple Spin States. J Phys Chem A 2017; 121:7362-7373. [DOI: 10.1021/acs.jpca.7b07676] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shi Yin
- Department of Chemistry,
NSF ERC for Extreme Ultraviolet Science and Technology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Elliot R. Bernstein
- Department of Chemistry,
NSF ERC for Extreme Ultraviolet Science and Technology, Colorado State University, Fort Collins, Colorado 80523, United States
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9
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Huang W, Jiang N, Schwarz WHE, Yang P, Li J. Diversity of Chemical Bonding and Oxidation States in MS 4 Molecules of Group 8 Elements. Chemistry 2017; 23:10580-10589. [PMID: 28516506 DOI: 10.1002/chem.201701117] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Indexed: 11/11/2022]
Abstract
The geometric and electronic ground-state structures of 30 isomers of six MS4 molecules (M=Group 8 metals Fe, Ru, Os, Hs, Sm, and Pu) have been studied by using quantum-chemical density functional theory and correlated wavefunction approaches. The MS4 species were compared to analogous MO4 species recently investigated (W. Huang, W.-H. Xu, W. H. E. Schwarz, J. Li, Inorg. Chem. 2016, 55, 4616). A metal oxidation state (MOS) with a high value of eight appeared in the low-spin singlet Td geometric species (Os,Hs)S4 and (Ru,Os,Hs)O4 , whereas a low MOS of two appeared in the high-spin septet D2d species Fe(S2 )2 and (slightly excited) metastable Fe(O2 )2 . The ground states of all other molecules had intermediate MOS values, with S2- , S22- , S21- (and O2- , O1- , O22- , O21- ) ligands bonded by ionic, covalent, and correlative contributions. The known tendencies toward lower MOS on going from oxides to sulfides, from Hs to Os to Ru, and from Pu to Sm, and the specific behavior of Fe, were found to arise from the different atomic orbital energies and radii of the (n-1)p core and (n-1)d and (n-2)f valence shells of the metal atoms in row n of the periodic table. The comparative results of the electronic and geometric structures of the MO4 and MS4 species provides insight into the periodicity of oxidation states and bonding.
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Affiliation(s)
- Wei Huang
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P.R. China
| | - Ning Jiang
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P.R. China
| | - W H Eugen Schwarz
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P.R. China.,Physical and Theoretical Chemistry, University of Siegen, Siegen, 57068, Germany
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.,Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory, Richland, Washington, 953002, USA
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P.R. China.,Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory, Richland, Washington, 953002, USA
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10
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Tazibt S, Chikhaoui A, Bouarab S, Vega A. Structural, Electronic, and Magnetic Properties of Iron Disulfide FenS20/± (n = 1–6) Clusters. J Phys Chem A 2017; 121:3768-3780. [DOI: 10.1021/acs.jpca.7b00942] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Tazibt
- Faculté
du Génie Electrique et d’Informatique, Université Mouloud Mammeri de Tizi-Ouzou, B.P. 17 RP, 15000 Tizi-Ouzou, Algeria
| | - A. Chikhaoui
- Laboratoire
de Physique et Chimie Quantique, Faculté des Sciences, Université Mouloud Mammeri de Tizi-Ouzou, B.P. 17 RP, 15000 Tizi-Ouzou, Algeria
| | - S. Bouarab
- Laboratoire
de Physique et Chimie Quantique, Faculté des Sciences, Université Mouloud Mammeri de Tizi-Ouzou, B.P. 17 RP, 15000 Tizi-Ouzou, Algeria
| | - A. Vega
- Departamento
de Física Teórica, Atómica y Óptica, Universidad de Valladolid, Paseo Belén 7, E-47011 Valladolid, Spain
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11
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Matthew DJ, Tieu E, Morse MD. Determination of the bond dissociation energies of FeX and NiX (X = C, S, Se). J Chem Phys 2017; 146:144310. [DOI: 10.1063/1.4979679] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Daniel J. Matthew
- Department of Chemistry, University of Utah, Salt Lake City, Utah UT 84112, USA
| | - Erick Tieu
- Department of Chemistry, University of Utah, Salt Lake City, Utah UT 84112, USA
| | - Michael D. Morse
- Department of Chemistry, University of Utah, Salt Lake City, Utah UT 84112, USA
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12
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Yin S, Bernstein ER. Properties of iron sulfide, hydrosulfide, and mixed sulfide/hydrosulfide cluster anions through photoelectron spectroscopy and density functional theory calculations. J Chem Phys 2016; 145:154302. [DOI: 10.1063/1.4964651] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- Shi Yin
- Department of Chemistry, NSF ERC for Extreme Ultraviolet Science and Technology, Colorado State University, Fort Collins, Colorado 80523, USA
| | - Elliot R. Bernstein
- Department of Chemistry, NSF ERC for Extreme Ultraviolet Science and Technology, Colorado State University, Fort Collins, Colorado 80523, USA
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13
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Zeng Q, Li Z, Wang YB, Zhai H, Liu B, Tao O, Dong L, Guan J, Zhang Y. Density functional theory study of substituent effects on gas-phase heterolytic Fe-O and Fe-S bond energies ofm-G-C6H4OFe(CO)2(η5-C5H5) andm-G-C6H4SFe(CO)2(η5-C5H5). J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qing Zeng
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
- The State Key Laboratory of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Zucheng Li
- Department of Geological Sciences; University of Saskatchewan; 114 Science Place Saskatoon SK S7N 5E2 Canada
| | - Yi-Bo Wang
- Key Laboratory of Guizhou High-Performance Computational Chemistry; Guizhou University; Guiyang Guizhou 550025 China
| | - Huaqiang Zhai
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Bin Liu
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Ou Tao
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Ling Dong
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Jun Guan
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Yujie Zhang
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
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14
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Tran VT, Tran QT. Geometrical and Electronic Structures of MnS3–/0 Clusters from Computational Chemistry and Photoelectron Spectroscopy. J Phys Chem A 2016; 120:3670-6. [DOI: 10.1021/acs.jpca.6b02631] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Van Tan Tran
- Theoretical
and Physical Chemistry Division, Dong Thap University, 783-Pham
Huu Lau, Ward 6, Cao Lanh City, Dong Thap Vietnam
| | - Quoc Tri Tran
- Theoretical
and Physical Chemistry Division, Dong Thap University, 783-Pham
Huu Lau, Ward 6, Cao Lanh City, Dong Thap Vietnam
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15
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Tran VT, Tran QT, Hendrickx MFA. Geometric and Electronic Structures for MnS2–/0 Clusters by Interpreting the Anion Photoelectron Spectrum with Quantum Chemical Calculations. J Phys Chem A 2015; 119:5626-33. [DOI: 10.1021/acs.jpca.5b02896] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Van Tan Tran
- Theoretical
and Physical Chemistry Division, Dong Thap University, 783-Pham
Huu Lau, Cao Lanh City, Dong
Thap Vietnam
| | - Quoc Tri Tran
- Theoretical
and Physical Chemistry Division, Dong Thap University, 783-Pham
Huu Lau, Cao Lanh City, Dong
Thap Vietnam
| | - Marc F. A. Hendrickx
- Afdeling
Kwantumchemie en Fysicochemie, Departement Chemie, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Heverlee-Leuven, Belgium
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16
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Uzunova EL, Mikosch H. Electronic, magnetic structure and water splitting reactivity of the iron-sulfur dimers and their hexacarbonyl complexes: A density functional study. J Chem Phys 2015; 141:044307. [PMID: 25084910 DOI: 10.1063/1.4890650] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The iron sulfide dimers (FeS)2 and their persulfide isomers with S-S bonds are studied with the B3LYP density functional as bare clusters and as hexacarbonyls. The disulfides are more stable than the persulfides as bare clusters and the persulfide ground state lies at 3.2 eV above the global minimum, while in the hexacarbonyl complexes this order is reversed: persulfides are more stable, but the energy gap between disulfides and persulfides becomes much smaller and the activation barrier for the transition persulfide → disulfide is 1.11 eV. Carbonylation also favors a non-planar Fe2S2 ring for both the disulfides and the persulfides and high electron density in the Fe2S2 core is induced. The diamagnetic ordering is preferred in the hexacarbonyls, unlike the bare clusters. The hexacarbonyls possess low-lying triplet excited states. In the persulfide, the lowest singlet-to-triplet state excitation occurs by electron transition from the iron centers to an orbital located predominantly at S2 via metal-to-ligand charge transfer. In the disulfide this excitation corresponds to ligand-to-metal charge transfer from the sulfur atoms to an orbital located at the iron centers and the Fe-Fe bond. Water splitting occurs on the hexacarbonyls, but not on the bare clusters. The singlet and triplet state reaction paths were examined and activation barriers were determined: 50 kJ mol(-1) for HO-H bond dissociation and 210 kJ mol(-1) for hydrogen evolution from the intermediate sulfoxyl-hydroxyl complexes Fe2S(OH)(SH)(CO)6 formed. The lowest singlet-singlet excitations in the hexacarbonyls, the water adsorption complexes and in the reaction intermediates, formed prior to dihydrogen release, fall in the visible light region. The energy barrier of 210 kJ mol(-1) for the release of one hydrogen molecule corresponds to one visible photon of 570 nm. The dissociation of a second water molecule, followed by H2 and O2 release via hydro-peroxide intermediate is a two-step process, with activation barriers of 218 and 233 kJ mol(-1), which also fall in the visible light region. A comparison of the full reaction path with that on diiron dioxide hexacarbonyls Fe2O2(CO)6 is traced.
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Affiliation(s)
- Ellie L Uzunova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Hans Mikosch
- Institute for Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/E164-EC, 1060 Vienna, Austria
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17
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Tran VT, Tran QT, Hendrickx MF. On the multi-reference character of the low-lying states of the MnS−/0 clusters by the NEVPT2 assignment of the anion photoelectron spectrum. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.03.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Zeng Q, Li Z, Han D, Dong L, Zhai H, Liu B, Bai G, Zhang Y. Hartree-Fock and density functional theory study of remote substituent effects on gas-phase heterolytic Fe-O and Fe-S bond energies of p
-G-C6
H4
OFe(CO)2
(η
5
-C5
H5
) and p
-G-C6
H4
SFe(CO)2
(η
5
-C5
H5
). J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3252] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Qing Zeng
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
- The State Key Laboratory of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
| | - Zucheng Li
- Department of Geological Sciences; University of Saskatchewan; 114 Science Place Saskatoon SK S7N 5E2 Canada
| | - Daxiong Han
- The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry; Xiamen University; Xiamen 361005 China
| | - Ling Dong
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Huaqiang Zhai
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Bin Liu
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Genben Bai
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
| | - Yujie Zhang
- School of Chinese Pharmacy; Beijing University of Chinese Medicine; Beijing 100102 China
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19
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Tran VT, Hendrickx MFA. Molecular Structures for FeS4–/0 As Determined from an ab Initio Study of the Anion Photoelectron Spectra. J Phys Chem A 2013; 117:3227-34. [DOI: 10.1021/jp401343j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Van Tan Tran
- Afdeling
Kwantumchemie en Fysicochemie, Departement
Chemie, Katholieke Universiteit Leuven,
Celestijnenlaan 200F, B-3001 Heverlee-Leuven, Belgium
| | - Marc F. A. Hendrickx
- Afdeling
Kwantumchemie en Fysicochemie, Departement
Chemie, Katholieke Universiteit Leuven,
Celestijnenlaan 200F, B-3001 Heverlee-Leuven, Belgium
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20
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Li YN, Wang S, Wang T, Gao R, Geng CY, Li YW, Wang J, Jiao H. Energies and Spin States of FeS0/−, FeS20/−, Fe2S20/−, Fe3S40/−, and Fe4S40/−Clusters. Chemphyschem 2013; 14:1182-9. [DOI: 10.1002/cphc.201201043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Indexed: 11/06/2022]
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21
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Yin S, Wang Z, Bernstein ER. Formaldehyde and methanol formation from reaction of carbon monoxide and hydrogen on neutral Fe2S2 clusters in the gas phase. Phys Chem Chem Phys 2013; 15:4699-706. [DOI: 10.1039/c3cp50183c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Probing the structural, electronic and magnetic properties of multicenter Fe2S2 0/−, Fe3S4 0/− and Fe4S4 0/− clusters. J Mol Model 2012; 19:1527-36. [DOI: 10.1007/s00894-012-1714-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 11/27/2012] [Indexed: 10/27/2022]
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23
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Tran VT, Hendrickx MFA. Assignment of the photoelectron spectra of FeS3(-) by density functional theory, CASPT2, and RCCSD(T) calculations. J Phys Chem A 2011; 115:13956-64. [PMID: 22035064 DOI: 10.1021/jp208824b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The geometric structures of FeS(3) and FeS(3)(-) with spin multiplicities ranging from singlet to octet were optimized at the B3LYP level, allowing two low-lying conformations for these clusters to be identified. The planar D(3h) conformation contains three S(2-) atomic ligands (S(3)Fe(0/-)), whereas the C(2v) structure contains, in addition to an atomic S(2-) ligand, also a S(2)(2-) ligand that is side-on-bound to the iron cation: an η(2)-S(2)FeS conformation. Subsequently, energy differences between the various states of these conformations were estimated by carrying out geometry optimizations at the multireference CASPT2 level. Several competing structures for the ground state of the anionic cluster were recognized at this level. Relative stabilities were also estimated by performing single-point RCSSD(T) calculations on the B3LYP geometries. The ground state of the neutral complex was unambiguously found to be (5)B(2). The ground state of the anion is considerably less certain. The 1(4)B(2), 2(4)B(2), (4)B(1), and (6)A(1) states were all found as low-lying η(2)-S(2)FeS(-) states. Also, (4)B(2) of S(3)Fe(-) has a comparable CASPT2 energy. In contrast, B3LYP and RCCSD(T) mutually agree that the S(3)Fe(-) state is at a much higher energy. Energetically, the bands of the photoelectron spectra of FeS(3)(-) are reproduced at the CASPT2 level as ionizations from either the (4)B(2) or (6)A(1) state of η(2)-S(2)FeS. However, the Franck-Condon factors obtained from a harmonic vibrational analysis at the B3LYP level show that only the (4)B(2)-to-(5)B(2) ionization, which preserves the η(2)-S(2)Fe-S conformation, provides the best vibrational progression match with the X band of the experimental photoelectron spectra.
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Affiliation(s)
- Van Tan Tran
- Afdeling Kwantumchemie en Fysicochemie, Departement Chemie, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Heverlee-Leuven, Belgium
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24
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Wang L, Huang DL, Zhen JF, Zhang Q, Chen Y. Experimental Determination of the Vibrational Constants of FeS(X5Δ) by Dispersed Fluorescence Spectroscopy. CHINESE J CHEM PHYS 2011. [DOI: 10.1088/1674-0068/24/01/1-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Zhao YC, Yuan J, Zhang ZG, Xu HG, Zheng W. Structures of manganese polysulfides: mass-selected photodissociation and density functional calculations. Dalton Trans 2011; 40:2502-8. [DOI: 10.1039/c0dt01179g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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26
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Hendrickx MFA, Anam KR. A New Proposal for the Ground State of the FeO− Cluster in the Gas Phase and for the Assignment of Its Photoelectron Spectra. J Phys Chem A 2009; 113:8746-53. [DOI: 10.1021/jp903890m] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Marc F. A. Hendrickx
- Afdeling Kwantumchemie en Fysicochemie, Departement Chemie, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Heverlee-Leuven, Belgium
| | - Koteswara R. Anam
- Afdeling Kwantumchemie en Fysicochemie, Departement Chemie, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Heverlee-Leuven, Belgium
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27
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Liang B, Wang X, Andrews L. Infrared Spectra and Density Functional Theory Calculations of Group 8 Transition Metal Sulfide Molecules. J Phys Chem A 2009; 113:5375-84. [DOI: 10.1021/jp900994c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Binyong Liang
- Department of Chemistry, University of Virginia, P.O. Box 400319, Charlottesville, Virginia 22904-4319
| | - Xuefeng Wang
- Department of Chemistry, University of Virginia, P.O. Box 400319, Charlottesville, Virginia 22904-4319
| | - Lester Andrews
- Department of Chemistry, University of Virginia, P.O. Box 400319, Charlottesville, Virginia 22904-4319
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28
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Affiliation(s)
- Zhen Hua Li
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, People's Republic of China
| | - Yu Gong
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, People's Republic of China
| | - Kangnian Fan
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, People's Republic of China
| | - Mingfei Zhou
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, People's Republic of China
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29
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30
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Wu ZJ, Wang MY, Su ZM. Electronic structures and chemical bonding in diatomic ScX to ZnX (X = S, Se, Te). J Comput Chem 2007; 28:703-14. [PMID: 17195162 DOI: 10.1002/jcc.20603] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Bond distances, vibrational frequencies, electron affinities, ionization potentials, dissociation energies, and dipole moments of the title molecules in neutral, positively, and negatively charged ions were studied using density functional method. Ground electronic state was assigned for each molecule. The bonding patterns were analyzed and compared with both the available data and across the series. It was found that, besides ionic component, covalent bonds are formed between the metal s, d orbitals, and the p orbital of S, Se, and Te. For neutral and cationic molecules, the covalent character increases from ScX to CrX and from FeX to CuX with an exception of decrease at MnX and ZnX, while for anionic molecules, the trend is not obvious. For both neutral and charged molecules, the sulfides have the shortest bond distance and largest vibrational frequency, while tellurides have the largest bond distance and smallest vibrational frequency. For neutral and anionic molecules, the dissociation energy of sulfides is the largest, that of tellurides is the smallest, while this only remains true for cationic molecules from ScX(+) to FeX(+).
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Affiliation(s)
- Z J Wu
- Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.
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31
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Zhai HJ, Wang LM, Li SD, Wang LS. Vibrationally Resolved Photoelectron Spectroscopy of BO- and BO2-: A Joint Experimental and Theoretical Study. J Phys Chem A 2007; 111:1030-5. [PMID: 17253668 DOI: 10.1021/jp0666939] [Citation(s) in RCA: 139] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a photoelectron spectroscopy and computational study of two simple boron oxide species: BO- and BO2-. Vibrationally resolved photoelectron spectra are obtained at several photon energies (355, 266, 193, and 157 nm) for the 10B isotopomers, 10BO- and 10BO2-. In the spectra of 10BO-, we observe transitions to the 2Sigma+ ground state and the 2Pi excited state of 10BO at an excitation energy of 2.96 eV. The electron affinity of 10BO is measured to be 2.510+/-0.015 eV. The vibrational frequencies of the ground states of 10BO- and 10BO and the 2Pi excited state are measured to be 1725+/-40, 1935+/-30, and 1320+/-40 cm-1, respectively. For 10BO2-, we observe transitions to the 2Pig ground state and two excited states of 10BO2, 2Piu, and 2Sigmau+, at excitation energies of 2.26 and 3.04 eV, respectively. The electron affinity of 10BO2 is measured to be 4.46+/-0.03 eV and the symmetrical stretching vibrational frequency of the 2Piu excited state of 10BO2 is measured to be 980+/-30 cm-1. Both density functional and ab initio calculations are performed to elucidate the electronic structure and chemical bonding of the two boron oxide molecules. Comparisons with the isoelectronic AlO- and AlO2- species and the closely related molecules CO, N2, CN-, and CO2 are also discussed.
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Affiliation(s)
- Hua-Jin Zhai
- Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, USA
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32
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Fu YJ, Yang X, Wang XB, Wang LS. Probing the Electronic Structure of [2Fe-2S] Clusters with Three Coordinate Iron Sites by Use of Photoelectron Spectroscopy. J Phys Chem A 2005; 109:1815-20. [PMID: 16833511 DOI: 10.1021/jp045177k] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Five series of [2Fe-2S] complexes, [Fe(2)S(2)Cl(2)(-)(x)(CN)(x)](-), [Fe(2)S(2)(SEt)(2)(-)(x)Cl(x)](-), [Fe(2)S(2)(SEt)(2)(-)(x)(CN)(x)](-), [Fe(2)S(2)Cl(2)(-)(x)(OAc)(x)](-) (OAc = acetate), and [Fe(2)S(2)(SEt)(2)(-)(x)(OPr)(x)](-) (OPr = propionate) (x = 0-2), were produced by collision-induced dissociation of the corresponding [4Fe-4S] complexes, and their electronic structures were studied by photoelectron spectroscopy. All the [2Fe-2S] complexes contain a [Fe(2)S(2)](+) core similar to that in reduced [2Fe] ferredoxins but with different coordination geometries. For the first three series, which only involve tricoordinated Fe sites, a linear relationship between the measured binding energies and the substitution number (x) was observed, revealing the independent ligand contributions to the total electron binding energies. The effect of the ligand increases in the order SEt --> Cl --> CN, conforming to their electron-withdrawing ability in the same order. The carboxylate ligands in the [Fe(2)S(2)Cl(2)(-)(x)(OAc)(x)](-) and [Fe(2)S(2)(SEt)(2)(-)(x)(OPr)(x)](-) complexes were observed to act as bidentate ligands, giving rise to tetracoordinated iron sites. This is different from their monodentate coordination behavior in the [4Fe-4S] cubane complexes, reflecting the high reactivity of the unsatisfied three-coordinate iron site in the [2Fe-2S] complexes. The [2Fe-2S] complexes with tetracoordinated iron sites exhibit lower electron binding energies, that is, higher reductive activity than the all tricoordinate planar clusters. The electronic structures of all the [2Fe-2S] complexes were shown to conform to the "inverted energy level scheme".
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Affiliation(s)
- You-Jun Fu
- W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
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33
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Zhai HJ, Kiran B, Wang LS. Electronic and Structural Evolution of Monoiron Sulfur Clusters, FeS-n and FeSn (n = 1—6) from Anion Photoelectron Spectroscopy. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/chin.200326010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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