Dimeric and polymeric mercury(II) complexes of 1-methyl-1,2,3,4-tetrazole-5-thiol: Synthesis, crystal structure, spectroscopic characterization, and thermal analyses

چکیده مقاله

Two-dimensional coordination polymer of [Hg(μ₃-mmtz)₂]_n (1) and centrosymmetric dinuclear complexes of {[H₂en][Hg₂(mmtz)₄(μ-Br)₂]} (2) and {[H₂en][Hg₂(mmtz)₄(μ-I)₂]} (3) (where Hmmtz is 1-methyl-1,2,3,4-tetrazole-5-thiol and en is ethylene diamine) were synthesized from the reaction of Hmmtz and en with HgCl₂, HgBr₂ and HgI₂, respectively, in CH₃OH. Complex 1 was also synthesized from the reaction of Hmmtz and en with HgX₂ (X = OAc and SCN) in CH₃OH. These three complexes were thoroughly characterized by elemental analysis (CHN), thermal gravimetric analysis (TGA), differential thermal analyses (DTA), infrared, UV-vis, ¹H NMR, and luminescence spectroscopy, and their structures were determined by single-crystal X-ray diffraction. © 2015 Elsevier B.V.