Dimeric and polymeric mercury(II) complexes containing 4-methyl-1,2,4-triazole-3-thiol ligand: X-ray studies, spectroscopic characterization, and thermal analyses

چکیده مقاله

The polymer complex [Hg(μ-mptrz)₂] _n and two binuclear complexes of {[H₂en][Hg₂(mptrz)₄(μ-Br)₂]} and {[H₂en][Hg₂(mptrz)₄(μ-I)₂]} were prepared from the reaction of 4-methyl-1,2,4-triazole-3-thiol (Hmptrz) and ethylene diamine (en) with HgCl₂, HgBr₂, and HgI₂ in CH₃OH, respectively. Complex [Hg(μ-mptrz)₂] _n was also prepared from the reaction of 4-methyl-1,2,4-triazole-3-thiol and ethylene diamine with Hg(OAc)₂ and Hg(SCN)₂ in CH₃OH and Hg(NO₃)₂·H₂O in a mixture of CH₃OH/H₂O. Analysis of these complexes was done by CHN elemental analysis, IR, UV-Vis, ¹H and ¹³C NMR, and luminescence spectroscopy, as well as single-crystal X-ray diffraction. Thermal stabilities of these complexes were also studied by TGA/DTA analyses. Graphical abstract: [Figure not available: see fulltext.] © 2014 Springer-Verlag Wien.