Single crystal x-ray structural characterisation of Bi X sub(2)(s sub(2)CNEt sub(2)) infinity, X=Cl, Br

Abstract

Single-crystal room-temperature X-ray structure determinations of the title compounds have been carried out. The two compounds are isomorphous, and isomorphous with the previously determined iodide analogue, being monoclinic, P 2 sub(1)/c, a approximately equal to 10.0, b approximately equal to 14.9, c approximately equal to 7.8 Angstrom, beta approximately equal to 92 degrees, Z = 4 formula units; residuals were 0.037, 0.036 for 2197, 1654 'observed' reflections for X = Cl , Br respectively. As in the iodide, the complexes are infinite polymers, with successive bismuth atoms bridged by the two halides and one sulfur atom of the ligand , which also chelates each bismuth. The structure determination of C sub(5)H sub(5)NCONEt sub(2)] sub(2) [Cl sub(5)Bi(NC sub(5)H sub(5))], isostructural with its thiocarbamoyl analogue, is also recorded.