Main Group Metal Halide Complexes with Sterically Hindered Thioureas XV. The Crystal and Molecular Structures of Two Unique Monomeric Bismuth(III) Thiocyanate Complexes with 1,3-Dimethyl-2(3H)-imidazolethione
Chemistry & Biochemistry
Two new Bi(III) thiocyanate complexes with a sterically hindered thiourea, 1,
3-dimethyl-2(3H)-imidazolethione (dmit), were prepd. and characterized via x-ray crystallog. and IR spectroscopy. One complex, [Bi(S)NCS(dmit)3]·2H2O (I), could not be obtained in anal. pure form, but an individual crystal reveals a slightly distorted octahedral structure with one of the H2O mols. occupying the position trans to the sulfido group. The other complex, [Bi(SCN)(NCS)2(dmit)3] (II), is also distorted octahedral with the dmit ligands in a meridional configuration. Two of the thiocyanates are N-bonded and the other is S-bonded. IR spectra show characteristic thiocyanate CN stretches correlating to the bonding mode for both complexes, and neither complex shows strong evidence of a stereoactive lone pair.
Williams DJ, Carter T, Fahn KL, VanDerveer D. 1995. Main group metal halide complexes with sterically hindered thioureas XV. the crystal and molecular structures of two unique monomeric bismuth(III) thiocyanate complexes with 1,3-dimethyl-2(3H)-imidazolethione. Inorg Chim Acta 228(2):69-72.