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Chen C, Wang L, Zhao X, Wu Z, Bernhardt B, Eckhardt AK, Schreiner PR, Zeng X. Photochemistry of HNSO 2 in cryogenic matrices: spectroscopic identification of the intermediates and mechanism. Phys Chem Chem Phys 2020; 22:7975-7983. [PMID: 32236270 DOI: 10.1039/d0cp00962h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Small molecules solely consisting of H, N, O, and S are highly relevant intermediates in atmospheric chemistry and biology. Even though several isomers of [HNO2S] have been computationally predicted, only the IR spectra for the two lowest-energy isomers HNSO2 and syn-syn HONSO have been previously reported. Herein, the photochemistry (193 nm laser) of HNSO2 in N2-, Ne-, and Ar-matrices (≤15 K) has been studied. Aside from syn-syn HONSO, several new isomers including anti-syn HONSO, gauche-syn HOSNO, syn HOS(O)N, anti HOS(O)N, syn HS(O)NO, anti HN(O)SO, gauche-syn HSONO, and an elusive caged-radical pair HOS˙˙NO have been identified. Additionally, the formation of fragments HONO, HO˙, ˙NO, and ˙NO2 has also been observed. The characterization of these species with matrix-isolation IR and UV/Vis spectroscopy is supported by 15N-labeling and quantum chemical computations at the B3LYP/6-311++G(3df,3pd) level. Furthermore, the photo-induced isomerization reactions, including the conformational conversion of syn-syn HONSO → anti-syn HONSO and reversible isomerization of HOSNO ↔ anti-syn HONSO, syn-syn HONSO ↔ HN(O)SO, HSONO ↔ HS(O)NO, and HOS˙˙NO ↔ HOSNO have also been observed, and the underlying mechanism is discussed.
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Affiliation(s)
- Changyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China.
| | - Lina Wang
- Department of Chemistry, Fudan University, 200433 Shanghai, China
| | - Xiaofang Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China.
| | - Zhuang Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China.
| | - Bastian Bernhardt
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - André K Eckhardt
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China. and Department of Chemistry, Fudan University, 200433 Shanghai, China
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2
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Wei R, Chen X, Gong Y. Infrared Spectra of the SO2F2– Anion in Solid Argon and Neon. J Phys Chem A 2018; 122:7723-7729. [DOI: 10.1021/acs.jpca.8b07756] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rui Wei
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiuting Chen
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Gong
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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3
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Liu Q, Wu Z, Xu J, Lu Y, Li H, Zeng X. Methoxysulfinyl Radical CH3OSO: Gas-Phase Generation, Photochemistry, and Oxidation. J Phys Chem A 2017; 121:3818-3825. [DOI: 10.1021/acs.jpca.7b02561] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qifan Liu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, P. R. China
| | - Zhuang Wu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, P. R. China
| | - Jian Xu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, P. R. China
| | - Yan Lu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, P. R. China
| | - Hongmin Li
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, P. R. China
| | - Xiaoqing Zeng
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, P. R. China
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4
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Wu Z, Xu J, Liu Q, Dong X, Li D, Holzmann N, Frenking G, Trabelsi T, Francisco JS, Zeng X. The hypothiocyanite radical OSCN and its isomers. Phys Chem Chem Phys 2017. [PMID: 28621378 DOI: 10.1039/c7cp02774e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An elusive biologically relevant hypothiocyanite radical (OSCN) has been generated in the gas phase, and its reversible photoisomerization with two novel isomers OSNC and SOCN has been observed in cryogenic Ar and N2 matrices at 2.8 K.
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Affiliation(s)
- Zhuang Wu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Jian Xu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Qifan Liu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Xuelin Dong
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Dingqing Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Nicole Holzmann
- STFC Rutherford Appleton Laboratory
- Harwell Oxford
- Didcot OX11 0QX
- UK
| | - Gernot Frenking
- Fachbereich Chemie
- Philipps-Universität Marburg
- Marburg D-35032
- Germany
- Donostia International Physics Center (DIPC)
| | - Tarek Trabelsi
- Department of Chemistry
- University of Nebraska – Lincoln
- Lincoln
- USA
| | | | - Xiaoqing Zeng
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
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5
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Coronel AC, Fernández LE, Varetti EL. Structural and Vibrational Properties of the CF3XXCF3(X= O, S, Se, Te) Molecules. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201400463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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6
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Cuaquira Reina M, Della Védova CO, Ulic SE, Willner H, Oberhammer H. Spectroscopic Characterization and Conformational Properties of
S
‐(Fluoroformyl)‐
O
‐(acetyl) Thioperoxide and
S
‐(Fluoroformyl)‐
O
‐(trifluoroacetyl) Thioperoxide. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marlene Cuaquira Reina
- CEQUINOR Facultad de Ciencias Exactas, UniversidadNacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina
| | - Carlos O. Della Védova
- CEQUINOR Facultad de Ciencias Exactas, UniversidadNacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina
- Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP‐CIC‐CONICET) Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Camino Centenario, Gonnet, Buenos Aires, República Argentina
| | - Sonia E. Ulic
- CEQUINOR Facultad de Ciencias Exactas, UniversidadNacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina
- Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7 (6700) Luján, Buenos Aires, República Argentina
| | - Helge Willner
- Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal, Germany
| | - Heinz Oberhammer
- Institut für Physikalische und Theoretische Chemie, Universität Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
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7
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Ma R, Yuan D, Chen M, Zhou M, Wang X, Andrews L. Infrared spectrum of carbon trisulfide in solid argon. J Phys Chem A 2009; 113:4976-81. [PMID: 19331386 DOI: 10.1021/jp9001687] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cocondensation of carbon disulfide with high-frequency discharged argon at 4 K produced carbon monosulfide and atomic sulfur, which reacted spontaneously upon annealing to form the carbon trisulfide molecule as identified from the multiplets observed in mixed (12)C, (13)C and (32)S, (34)S isotopic spectra. On the basis of isotopic substitution and theoretical frequency calculations, infrared absorptions at 1263.3 and 570.1 cm(-1) were assigned to predominantly CS stretching and bending vibrations of CS(3) in solid argon. The CS(3) molecule, which was calculated to have a singlet ground state with C(2v) symmetry, dissociated to form the weakly bound SCS-S complex upon visible light irradiation.
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Affiliation(s)
- Renhu Ma
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
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8
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Minh Tuong C, Hammons WK, Howarth AL, Lutz KE, Maduvu AD, Haysley LB, Allred BRT, Hoyt LK, Mashuta MS, Noble ME. Alkylation of a Dimolybdenum SO Bridge, Subsequent Reactions, and Characterization of the Thioperoxide Bridge. Inorg Chem 2009; 48:5027-38. [DOI: 10.1021/ic9002093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Chi Minh Tuong
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
| | - Whitney K. Hammons
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
| | - Ashley L. Howarth
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
| | - Kelly E. Lutz
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
| | - Ackim D. Maduvu
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
| | - Laura B. Haysley
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
| | - Brian R. T. Allred
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
| | - Lenore K. Hoyt
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
- Department of Chemistry, Idaho State University, Pocatello, Idaho 83209
| | - Mark S. Mashuta
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
| | - Mark E. Noble
- Department of Chemistry, University
of Louisville, Louisville, Kentucky 40292,
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9
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Experimental and quantum chemical investigation on fluorocarbonylsulfenyl benzoate, FC(O)SOC(O)C6H5. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Tong S, Ge M, Wang W, Della Védova CO. Experimental and theoretical study of a novel compound: Fluorocarbonylsulfenyl acetate, FC(O)SOC(O)CH3. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2008.08.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Reina MC, Boese R, Ge M, Ulic SE, Beckers H, Willner H, Della Védova CO. Synthesis, Spectroscopic Characterization, and Conformational Properties of Trichloromethanesulfenyl Acetate, CCl3SOC(O)CH3. J Phys Chem A 2008; 112:7939-46. [DOI: 10.1021/jp803609m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Marlene Cuaquira Reina
- CEQUINOR (CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina, Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7 (6700) Luján, Buenos Aires, República Argentina, Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP-CIC-CONICET), Camino Centenario, Gonnet, Buenos Aires, República Argentina, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s
| | - Roland Boese
- CEQUINOR (CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina, Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7 (6700) Luján, Buenos Aires, República Argentina, Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP-CIC-CONICET), Camino Centenario, Gonnet, Buenos Aires, República Argentina, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s
| | - Maofa Ge
- CEQUINOR (CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina, Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7 (6700) Luján, Buenos Aires, República Argentina, Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP-CIC-CONICET), Camino Centenario, Gonnet, Buenos Aires, República Argentina, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s
| | - Sonia E. Ulic
- CEQUINOR (CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina, Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7 (6700) Luján, Buenos Aires, República Argentina, Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP-CIC-CONICET), Camino Centenario, Gonnet, Buenos Aires, República Argentina, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s
| | - Helmut Beckers
- CEQUINOR (CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina, Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7 (6700) Luján, Buenos Aires, República Argentina, Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP-CIC-CONICET), Camino Centenario, Gonnet, Buenos Aires, República Argentina, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s
| | - Helge Willner
- CEQUINOR (CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina, Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7 (6700) Luján, Buenos Aires, República Argentina, Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP-CIC-CONICET), Camino Centenario, Gonnet, Buenos Aires, República Argentina, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s
| | - Carlos O. Della Védova
- CEQUINOR (CONICET-UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, (1900) La Plata, Buenos Aires, República Argentina, Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7 (6700) Luján, Buenos Aires, República Argentina, Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP-CIC-CONICET), Camino Centenario, Gonnet, Buenos Aires, República Argentina, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People’s
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12
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Chen M, Yang R, Ma R, Zhou M. Infrared spectra of the sulfenic ester CH3SOCH3 and its photodissociation products in solid argon. J Phys Chem A 2008; 112:7157-61. [PMID: 18636699 DOI: 10.1021/jp803436m] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
UV light irradiation of dimethyl sulfoxide (DMSO) in low temperature solid argon matrix produces sulfenic ester, CH 3SOCH 3, a high energy structural isomer of DMSO. The sulfenic ester molecule further dissociates to the CH 2O-CH 3SH complex under 266 nm laser irradiation. The CH 2S-CH 3OH complex is also formed upon UV light irradiation. The infrared spectra of the aforementioned species are assigned on the basis of isotopic substitutions ( (13)C and deuterium) as well as density functional frequency calculations.
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Affiliation(s)
- Mohua Chen
- 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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13
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Du L, Yao L, Ge MF, Wang DX. HeI photoelectron spectroscopy and quantum chemical investigation on trichloromethanesulfenyl benzoate, C6H5C(O)OSCCl3. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.05.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Du L, Yao L, Ge M. He I Photoelectron Spectroscopy and Theoretical Investigation on Diaceto Disulfide, CH3C(O)OSSOC(O)CH3. J Phys Chem A 2007; 111:11787-92. [DOI: 10.1021/jp075164h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Lin Du
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Li Yao
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Maofa Ge
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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15
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Du L, Yao L, Zeng X, Ge M, Wang D. HeI Photoelectron Spectroscopy and Theoretical Study of Trichloromethanesulfenyl Acetate, CCl3SOC(O)CH3, and Trichloromethanesulfenyl Trifluoroacetate, CCl3SOC(O)CF3. J Phys Chem A 2007; 111:4944-9. [PMID: 17511433 DOI: 10.1021/jp070601d] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Two novel species, trichloromethanesulfenyl acetate, CCl(3)SOC(O)CH(3), and trichloromethanesulfenyl trifluoroacetate, CCl(3)SOC(O)CF(3), have been generated in situ by the heterogeneous reactions between trichloromethanesulfenyl chloride, CCl(3)SCl, and corresponding silver salts, silver acetate (AgOC(O)CH(3)) and silver trifluoroacetate (AgOC(O)CF(3)), respectively. Photoelectron spectroscopy and quantum chemical calculations are performed to investigate these two molecules, together with their precursor, CCl(3)SCl. Both of these two compounds may exist in the gas phase as a mixture of gauche and trans conformations. As for the dihedral angles delta(RSOR') of the gauche conformers, 107.0 degrees and 108.5 degrees are derived by theoretical calculations (at the B3LYP/6-311+G(3df) level) for CCl(3)SOC(O)CH(3) and CCl(3)SOC(O)CF(3), respectively. The first vertical ionization energies of CCl(3)SOC(O)CH(3) and CCl(3)SOC(O)CF(3), which have been determined by photoelectron spectroscopy, are 9.67 and 10.34 eV, respectively. According to the experimental results and theoretical analysis, the first ionization energy of these two molecules both come from the ionization of the lone pair electron of S atom.
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Affiliation(s)
- Lin Du
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China
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16
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17
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Zeng X, Ge M, Sun Z, Wang D. Bis(trifluoroaceto) Disulfide (CF3C(O)OSSOC(O)CF3): A HeI Photoelectron Spectroscopy and Theoretical Study. J Phys Chem A 2006; 110:5685-91. [PMID: 16640363 DOI: 10.1021/jp061050e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Bis(trifluoroaceto) disulfide CF(3)C(O)OSSOC(O)CF(3) was prepared and studied by Raman, photoelectron spectroscopy (PES), and theoretical calculations. This molecule exhibits gauche conformation with both C=O groups cis to the S-S bond; the structure of the OSSO moiety is characterized by dihedral angle delta(OSSO) = -95.1 degrees due to the sulfur-sulfur lone pair interactions. The contracted S-S bond (1.979 Angstroms) and relatively high rotational barrier (19.29 kcal mol(-1) at the B3LYP/6-31G level) of the delta(OSSO) indicate the partial resonance-induced double bond character in this molecule. After ionization, the ground cationic-radical form of CF(3)C(O)OSSOC(O)CF(3)(*+) adopts a trans planar main-atom structure (delta(OSSO) = 180 degrees and delta(OCOS) = 0 degrees ) with C(2)(h) symmetry. The S-S bond elongates to 2.054 Angstroms, while the S-O bond shortens from 1.755 Angstroms in neutral form to 1.684 Angstroms in its corresponding cationic-radical form. The adiabatic ionization energy of 9.91 eV was obtained accordingly. The first two HOMOs correspond to the electrons mainly localized on the sulfur 3p lone pair MOs: 3ppi {36a (n(A)(S))](-1) and 3ppi [35b (n(B)(S), n(B)(O(C)(=)(O)))](-1), with an experimental energy separation of 0.16 eV. The first vertical ionization energy is determined to be 10.81 eV.
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Affiliation(s)
- Xiaoqing Zeng
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
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