1
|
Lu B, Wu Z, Wang L, Zhu B, Rauhut G, Zeng X. The simplest alkynyl thiocyanate HCCSCN and its isomers. Chem Commun (Camb) 2021; 57:3343-3346. [PMID: 33659974 DOI: 10.1039/d1cc00629k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The simplest alkynyl thiocyanate HCCSCN has been synthesized and characterized for the first time. HCCSCN is surprisingly stable at room temperature but undergoes photoisomerization in an Ar-matrix (10 K) to yield the novel sulfenyl isocyanide HCCSNC and thioketene NCC(H)CS. The isomeric isothiocyanate HCCNCS, missing in the photochemistry of HCCSCN, can be generated through the photodecarbonylation of propiolyl isothiocyanate.
Collapse
Affiliation(s)
- Bo Lu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China.
| | | | | | | | | | | |
Collapse
|
2
|
Lu B, Qin Y, Lu Y, Liu Q, Zeng X. Acryloylnitrenes: Spectroscopic Characterization, Spin Multiplicities, and Rearrangement to Vinyl Isocyanates. J Phys Chem A 2020; 124:6319-6329. [PMID: 32660245 DOI: 10.1021/acs.jpca.0c04204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The simplest acryloylnitrene, CH2═CHC(O)N (1b), and two halogenated derivatives, CH2═CFC(O)N (2b) and CH2═CBrC(O)N (3b), were generated through the 266 nm laser photolysis of the corresponding azide precursors in solid N2-matrices at 15 K. The IR spectroscopic characterization of these new acylnitrenes is supported by 15N-labeling and quantum chemical calculations at the B3LYP/6-311++G(3df,3pd) level of theory. For the three nitrenes 1b, 2b, and 3b, two conformers exhibiting syn and anti configurations between the C═C and C═O bonds with respect to the C-C bonds have been identified. Consistent with the CBS-QB3 calculated singlet-triplet energy gaps (ΔEST < 0 kcal mol-1), the IR spectral analysis suggests that all these acryloylnitrenes adopt oxazirine-like structures with closed-shell singlet spin multiplicity. Upon subsequent green light (532 nm) irradiation, these acryloylnitrenes rearrange to form vinyl isocyanates CH2═CXNCO (X = H, F, Br), for which the IR spectra have also been obtained. According to the calculations on the α,β-fluorinated acryloylnitrenes at the CBS-QB3 level, their spin multiplicities can be switched from singlet CH2═CFC(O)N (ΔEST = -0.86 kcal mol-1) to triplet CF2═CFC(O)N (ΔEST = +0.61 kcal mol-1), whereas CFH═CFC(O)N is magnetically bistable due to a rather small ΔEST (+0.09 kcal mol-1).
Collapse
Affiliation(s)
- Bo Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Yuanyuan Qin
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Yan Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Qian Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China.,Department of Chemistry, Fudan University, Shanghai 200433, China
| |
Collapse
|
3
|
Pasinszki T, Vörös T, Vass G, Tarczay G, Jalsovszky I. Spectroscopy, structure, thermal and photochemical decomposition of 5-chloro-3-trifluoromethyl-1,2,4-thiadiazole: Generation of trifluoroacetonitrile N-sulfide. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
4
|
Vörös T, Lajgút GG, Magyarfalvi G, Tarczay G. Photochemical generation of H2NCNX, H2NNCX, H2NC(NX) (X = O, S) in low-temperature matrices. J Chem Phys 2017; 146:024305. [DOI: 10.1063/1.4973236] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
5
|
Srinivas D, Upadhyaya HP. Ground state dissociation pathways for 3,4,-dichloro-1,2,5-thiadiazole: Spectroscopic observation and fate of NC C(Cl2) N S isomer. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.08.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
6
|
Wu Z, Li D, Li H, Zhu B, Sun H, Francisco JS, Zeng X. Gas-Phase Generation and Decomposition of a Sulfinylnitrene into the Iminyl Radical OSN. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201510105] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zhuang Wu
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Dingqing Li
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Hongmin Li
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Bifeng Zhu
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Hailong Sun
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | | | - Xiaoqing Zeng
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| |
Collapse
|
7
|
Wu Z, Li D, Li H, Zhu B, Sun H, Francisco JS, Zeng X. Gas-Phase Generation and Decomposition of a Sulfinylnitrene into the Iminyl Radical OSN. Angew Chem Int Ed Engl 2015; 55:1507-10. [DOI: 10.1002/anie.201510105] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Zhuang Wu
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Dingqing Li
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Hongmin Li
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Bifeng Zhu
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | - Hailong Sun
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| | | | - Xiaoqing Zeng
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 China
| |
Collapse
|
8
|
Li H, Wu Z, Li D, Zeng X, Beckers H, Francisco JS. A Singlet Thiophosphoryl Nitrene and Its Interconversion with Thiazyl and Thionitroso Isomers. J Am Chem Soc 2015; 137:10942-5. [PMID: 26275526 DOI: 10.1021/jacs.5b07302] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Thiophosphoryl nitrenes, R2P(S)N, are thiazirine-like intermediates that have been chemically inferred from trapping products in early solution studies. In this work, photolysis of the simplest thiophosphoryl azide, F2P(S)N3, in solid noble-gas matrices enabled a first-time spectroscopic (IR and UV-vis) identification of the thiophosphoryl nitrene F2P(S)N in its singlet ground state. Upon visible-light irradiation (≥495 nm), it converts into the thionitroso isomer F2P-N═S, which can also be produced in the gas phase from flash vacuum pyrolysis of F2P(S)N3. Further irradiation of F2P-NS with 365 nm UV light leads to the reformation of F2P(S)N and isomerization to the thiazyl species F2P-S≡N.
Collapse
Affiliation(s)
- Hongmin Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Zhuang Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Dingqing Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Helmut Beckers
- Institut für Chemie und Biochemie, Freie Universität Berlin , D-14195 Berlin, Germany
| | - Joseph S Francisco
- Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States
| |
Collapse
|
9
|
An ab initio study of structure, stability, and spectroscopic parameters of 5-atomic [C, C, H, N, S] isomers. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.01.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
10
|
Krebsz M, Tarczay G, Pasinszki T. Generation and Spectroscopic Identification of ClCNS, ClNCS and NCCNS. Chemistry 2013; 19:17201-8. [DOI: 10.1002/chem.201302964] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 08/08/2013] [Indexed: 11/10/2022]
|
11
|
Vörös T, Bazsó G, Tarczay G. Matrix Isolation and Computational Study of the [H, C, N, Se] Isomers. J Phys Chem A 2013; 117:13616-25. [DOI: 10.1021/jp407619s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tamás Vörös
- Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, H-1518, Budapest 112, Hungary
| | - Gábor Bazsó
- Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, H-1518, Budapest 112, Hungary
| | - György Tarczay
- Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, H-1518, Budapest 112, Hungary
| |
Collapse
|
12
|
Vörös T, Bazsó G, Tarczay G, Pasinszki T. Matrix-isolation spectroscopic and computational study of [2C, 2N, 2S] isomers: Photochemical generation of SCNNCS and NCSNCS from NCSSCN. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.04.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
13
|
Krebsz M, Májusi G, Pacsai B, Tarczay G, Pasinszki T. Generation and Spectroscopic Identification of Selenofulminic Acid and Its Methyl and Cyano Derivatives (XCNSe, X=H, CH3, NC). Chemistry 2012; 18:2646-52. [DOI: 10.1002/chem.201103004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2011] [Indexed: 11/09/2022]
|
14
|
Rodriguez-Betancourtt VM, Quezada-Navarro VM, Neff M, Rauhut G. Anharmonic frequencies of [F,C,N,X] isomers (X=O,S) obtained from explicitly correlated coupled-cluster calculations. Chem Phys 2011. [DOI: 10.1016/j.chemphys.2011.06.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
15
|
Ramos LA, Ulic SE, Romano RM, Erben MF, Lehmann CW, Bernhardt E, Beckers H, Willner H, Della Védova CO. Vibrational Spectra, Crystal Structures, Constitutional and Rotational Isomerism of FC(O)SCN and FC(O)NCS. Inorg Chem 2010; 49:11142-57. [DOI: 10.1021/ic101741e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Luis A. Ramos
- CEQUINOR (UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, 1900 La Plata, República Argentina
| | - Sonia E. Ulic
- CEQUINOR (UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, 1900 La Plata, República Argentina
- Departamento de Ciencias Básicas, Universidad Nacional de Luján, Rutas 5 y 7, 6700 Luján, Argentina
| | - Rosana M. Romano
- CEQUINOR (UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, 1900 La Plata, República Argentina
| | - Mauricio F. Erben
- CEQUINOR (UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, 1900 La Plata, República Argentina
| | | | - Eduard Bernhardt
- Fachbereich C, Anorganische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Helmut Beckers
- Fachbereich C, Anorganische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Helge Willner
- Fachbereich C, Anorganische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Carlos O. Della Védova
- CEQUINOR (UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 esq. 115, 1900 La Plata, República Argentina
- Laboratorio de Servicios a la Industria y al Sistema Científico (UNLP-CIC-CONICET), Buenos Aires, República Argentina
| |
Collapse
|
16
|
|
17
|
Krebsz M, Hajgató B, Bazsó G, Tarczay G, Pasinszki T. Structure, Stability, and Generation of CH3CNS. Aust J Chem 2010. [DOI: 10.1071/ch10303] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The unstable acetonitrile N-sulfide molecule CH3CNS has been photolytically generated in inert solid argon matrix from 3,4-dimethyl-1,2,5-thiadiazole by 254-nm UV irradiation, and studied by ultraviolet spectroscopy and mid-infrared spectroscopy. The molecule is stable in the matrix to 254-nm UV irradiation, but decomposes to CH3CN and a sulfur atom when broad-band UV irradiation is used. Chemiluminescence due to S2 formation from triplet sulfur atoms was detected on warming the matrix to ∼20–25 K. The ground-state structure and potential uni- and bimolecular reactions of CH3CNS are investigated using B3LYP, CCSD(T), and MR-AQCC quantum-chemical methods. CH3CNS is demonstrated to be stable under isolated conditions at room temperature, i.e. in the dilute gas phase or in an inert solid matrix, but unstable owing to bimolecular reactions, i.e. in the condensed phase.
Collapse
|