Supramolecular aggregation via Sb center dot center dot center dot S interactions and O-H center dot center dot center dot O hydrogen-bonding in tris(N-methyl-N-2-hydroxyethyl)dithiocarbamato-S,S ')antimony(III) methanol solvate: Sb[S_2CN(Me)(CH_2CH_2OH)]_3 center dot MeOH

摘要

The central antimony atom in Sb[S2CN(Me)CH2CH2OH](3) center dot MeOH is asymmetrically chelated by three dithiocarbamate ligands leading to a six-coordinate geometry that defines a distorted octahedron; the lone-pair of electrons projects out through the triangular face defined by the three sulphur atoms forming the longer Sb-S bonds. Centrosymmetrically related molecules associate via weak Sb center dot center dot center dot S interactions to form dimeric aggregates. The crystal packing is dominated by O-H center dot center dot center dot O interactions involving both the ethanol residues and solvent methanol molecules via a 16-membered [O-H center dot center dot center dot](8) ring. These extend in two dimensions to form a layer architecture. The compound crystallizes in the triclinic space group P-1 with a = 9.1917(10) angstrom, b = 9.5326(10) angstrom, c = 15.5448(17) angstrom, alpha = 69.038(14)degrees, beta = 70.506(15)degrees, gamma = 70.447(16)degrees, and Z = 2.