Abstract
A combined electron diffraction and quantum-chemical (MP2/6-31G**) study of the molecular structure of 2-methylbenzenesulfochloride at 336(5) K was carried out. It was found that the gas phase contained only one conformer, C 1. The following structural parameters were obtained: r h1(C-H)av = 1.095(8) Å, r h1(C-C)Ph = 1.402(4) Å, r h1(CPh-Cmeth) = 1.507(13) Å, r h1(CPh-S) = 1.763(6) Å, r h1(S=O) = 1.418(4) Å, r h1(S-Cl) = 2.048(5) Å, ∠(H-C-H)meth/av = 107.3(96)°, ∠(Cl-S-O)av = 106.4(3)°, ∠CPh-S-Cl = 100.8(9), ∠O=S=O = 120.8(10)°. The CC-CS-S-Cl torsion angle that defines the position of the S-Cl bond relative to the plane of the benzene ring is 75.6(20)°. The B3LYP/6-311+G** calculated barriers of internal rotation of the methyl and sulfochloride groups are 1.2 kcal/mol and V 01 = 10.2 (V 02 = 4.1) kcal/mol, respectively.
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Original Russian Text Copyright © 2007 by V. M. Petrov, V. N. Petrova, G. V. Girichev, H. Oberhammer, A. V. Bardina, S. N. Ivanov, and A. V. Krasnov
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Translated from Zhurnal Strukturnoi Khimii, Vol. 48, No. 6, pp. 1089–1096, November–December, 2007.
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Petrov, V.M., Petrova, V.N., Girichev, G.V. et al. Electron diffraction and quantum-chemical studies of the molecular structure of 2-methylbenzenesulfochloride. J Struct Chem 48, 1022–1029 (2007). https://doi.org/10.1007/s10947-007-0166-x
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DOI: https://doi.org/10.1007/s10947-007-0166-x