Complexes of heterocyclic thiones and Group 12 metals

Complexation of Cd(SeCN)2with imidazolidine-2-thione and its derivatives: Solid state, solution NMR and anti-bacterial studies

“…Both N-and/or S-coordination is possible with these ambidentate ligands, as well as thione-thiol tautomers. However, although N-coordination was suggested earlier for some of the complexes from infrared spectroscopic studies, it has been confirmed crystallographically that coordination is via the exocyclic sulfur, predominantly in the thione form, with a reduction in the π-electron density of the exocyclic C=S bond [14,[16][17][18][19][20].…”

Dicyanidobis(N,N′-dimethythiourea-κS)mercury(II)

“…For the biological applications of mercury(II) complexes of thiones, see: Akrivos (2001); Bell et al (2001); Popovic et al (2000). …”

“…The structural characterization of mercury(II) complexes of thioamides is an important aspect of inorganic chemistry because such complexes can be used as models for metal-sulfur interactions in biological systems (Akrivos, 2001;Bell et al, 2001;Popovic et al, 2000). Several crystallographic reports about mercury(II) complexes of the type, L 2 HgX 2 (L = thiourea or its derivatives) reveal that these complexes usually consist of discrete monomeric molecules with tetrahedral (somewhat distorted) coordination environments around mercury(II) (Ahmad et al, 2009;Bell et al, 2001;Jiang et al, 2001;Lobana et al, 2008;Mufakkar et al, 2010;Nawaz et al, 2010;Popovic et al, 2000;Wu et al, 2004).…”

“…Several crystallographic reports about mercury(II) complexes of the type, L 2 HgX 2 (L = thiourea or its derivatives) reveal that these complexes usually consist of discrete monomeric molecules with tetrahedral (somewhat distorted) coordination environments around mercury(II) (Ahmad et al, 2009;Bell et al, 2001;Jiang et al, 2001;Lobana et al, 2008;Mufakkar et al, 2010;Nawaz et al, 2010;Popovic et al, 2000;Wu et al, 2004). Recently, we have reported the crystal structures of a number of cyanido complexes of d 10 metal ions with L-type ligands, including the crystal structure of a trinuclear complex, [{(tmtu) 2 Hg(CN) 2 } 2 .…”

Preparation and Spectral Investigation of Bis[N(2-methyl-phenyl) 4-Nitro-thiobenzamidato] mercury(II), Bis[N(2-methoxy-phenyl) 4-Nitro-thiobenzamidato]mercury(II), and Bis[N(2-chloro-phenyl) 4-Nitro-thiobenzamidato]mercury(II) Complexes

“…5 The sustained interest in the coordination chemistry of mercury with sulphurcontaining ligands is related to the environmental consequences of the high toxicity of the metal to living systems. 6 Habibi et al a number of attempts have been made to explore the coordination chemistry of mercury(II) with sulphur-containing ligands such as phenyl thiolate and heterocyclic thiones (e.g. pyrimidine-2-thione and imidazoline-2-(OH)-thione derivatives).…”