N,N-diethylmonothiocarbamates of group 12 metals.: The crystal and molecular structures of the hexameric complex [Hg{S(O)CNEt2}2]6

The N,N-diethylmonothiocarbamates of the group 12 elements Zn, Cd and Hg were synthesized by metathetic reactions between metallic salts and [Et2NH2], [S(O)CNEt2] in deoxygenated solvents.The mercury complex crystallized in the trigonal system (hexagonal setting) space group R-3 (NO. 148). The crystal consists of hexameric [Hg{S(O)CNEt2}(2)](6) clusters, each of which is held together by intermolecular Hg-S and Hg-O bonds (respectively 3.1200(13) and 2.777(3) Angstrom in length) between monomers in which the ligand coordinates to the metal via covalent Hg-S bonds and weak intramolecular Hg-O interactions. The coordination polyhedron around the Hg atom can be considered as a highly distorted octahedron. The IR and H-1, C-13 and Cd-113 or Hg-199 nmr spectra of the compounds are also discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.