Synthesis and spectroscopic studies on transition-metal nitrates and thiocyanates of a chelating imidazole-thioether ligand. The crystal structures of diaquabis[5-methyl-4-(ethyl-mercaptomethyl)imidazole]nickel(II) dinitrate, diaquabis[5-methyl-4-(ethyl-mercaptomethyl)imidazole] copper(II) dinitrate and bis[5-methyl-4-(ethyl-mercaptomethyl)imidazole] bis(thiocyanato-N)cobalt(II)
The synthesis and characterization of some monomeric transition-metal coordination compounds with the novel bidentate ligand 5-methyl-4-(ethyl- mercaptomethyl)imidazole (abbreviated memi) are described, viz. [M(memi)2(H2O)2](NO3)2 and M(memi)2(NCS)2 with M = Co, Ni, Cu. Single crystals of [Ni(memi)2(H2O)2](NO3)2 (A), [Cu(memi)2(H2O)2](NO3)2 (B) and Co(memi)2(NCS)2 (C) were used in structure determinations