Abstract
A combined electron diffraction (T = 394(5) K) and quantum-chemical (MP2/6-31G**) study has been performed to investigate the molecular structure of 1,3-benzenedisulfochloride (1,3-BDSC). The 1,3-BDSC molecule was found to exist as the trans (I) and cis (II) stable conformers where the planes containing S-Cl bonds are perpendicular to the plane of the benzene ring. The energy of conformer I is 0.13 kJ/mol lower than that of conformer II. The mutual effect of the sulfochloride groups was found to be absent, which is evident from the coincident bond lengths and angles in the two conformers. The main structural parameters of the conformers are r h1(C-H)av = 1.103(4) Å, r h1(C-C)av = 1.401(3) Å, r h1(C-S) = 1.767(4) Å, r h1(S=O) = 1.422(3) Å, r h1(S-Cl) = 2.048(4) Å, ∠Cl-S-O = 106.6(2)°, ∠C-S-Cl = 100.4(5)°, ∠ O-S-O = 123.2(5)°.
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Translated from Zhurnal Strukturnoi Khimii, Vol. 48, No. 4, pp. 686–692, July–August, 2007.
Original Russian Text Copyright © 2007 by V. N. Petrova, V. M. Petrov, G. V. Girichev, H. Oberhammer, and S. N. Ivanov
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Petrova, V.N., Petrov, V.M., Girichev, G.V. et al. Electron diffraction and quantum-chemical studies of the conformational properties of the 1,3-benzenedisulfochloride molecule. J Struct Chem 48, 634–641 (2007). https://doi.org/10.1007/s10947-007-0096-7
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DOI: https://doi.org/10.1007/s10947-007-0096-7