Monoclinic polymorph of chlorido(dimethyl sulfoxide-jO)triphenyltin(IV).

Autor: Pouye, Serigne Fallou, Cissé, Ibrahima, Diop, Libasse, Ríos-Merino, Francisco Javier, Bernès, Sylvain
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Zdroj: Acta Crystallographica Section E: Crystallographic Communications; Feb2018, Vol. 74 Issue 2, p163-166, 12p
Abstrakt: The crystal structure of the title tin complex, [Sn(C6H5)3Cl(C2H6OS)], (I), has been reported with one molecule in the asymmetric unit in an orthorhombic cell [Kumar et al. (2009). Acta Cryst. E65, m1602-m1603]. While using SnPh3Cl as a starting material for a reaction for which the products were recrystallized over a very long time (six months) from dimethyl sulfoxide (DMSO), a new polymorph was obtained for (I), with two independent molecules in the asymmetric unit of a monoclinic cell. The coordination geometry of the Sn centres remains unchanged, with the Cl- ion and the DMSO molecule in the apical positions and the phenyl C atoms in the equatorial positions of a trigonal bipyramid. The main difference between the polymorphs is the relative orientation of the phenyl rings in the equatorial plane, reflecting a degree of free rotation of these groups about their Sn--C bonds. In the crystal, molecules are linked into [010] chains mediated by weak C--H. . .O interactions. [ABSTRACT FROM AUTHOR]
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