Sur quelques sulfites de cations monovalents; étude structurale de LiCsSO3•2H2O
- 15 April 1979
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 57 (8) , 899-903
- https://doi.org/10.1139/v79-148
Abstract
A crystallographic study of some monovalent cation sulfites allows us to propose a larger number of salt anions with C3v symmetry (e.g., PO3F2−) than with Td symmetry (SO42− or BeF42−). In PO3F2− the F atom and the lone pair of SIV in SO32− are not bonded to neighbouring atoms.LiCsSO3•2H2O crystallises in the monoclinic system, a = 11.927(7), b = 5.670(3), c = 4.828(2) Å, β = 109.26(4)°, V = 308.2(9) Å3, ρo = 2.758(9)g/cm3, Z = 2, ρx = 2.771(6)g/cm3 (20°C; MoKα, d = 0.7107 Å).The structure is characterised by chains of SO3 and LiO4 groups parallel to the b axis. These chains are connected by a system of hydrogen bonds. The SO32− anion is pyramidal with the sulphur lone pair on the ternary axis. The average dimensions of the sulfite ion are S—O = 1.526 Å and O—S—O = 105.4°. The final R value is 0.046. [Journal translation]Keywords
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