In situ generation of functionalized 1,2,4-triazole-5-thiones containing pyridine or pyrazine moieties and their coordination to Hg<sup>II</sup>
作者:Elena Bermejo、Alfonso Castiñeiras、Isabel García-Santos、Raúl Rodríguez-Riobó
DOI:10.1039/c6ce00338a
日期:——
-triazole-5-thione). The complexes were isolated as solids and were characterized by elemental analysis, mass spectrometry and IR, 1H NMR and 13C NMR spectroscopy. Recrystallization of the complexes from DMSO gave the compounds [Hg(MPytat)2]n (3a), [Hg(HMPytat)2Br2]·H2O (4a), [Hg(HEPytat)(μ2-NS-EPytat)Cl2}2Hg] (6a), [Hg(EPytat)2]n (6b), [Hg(MPztat)2]n (10a) and [Hg(EPztat)2]n (11a) (HEPytat = 4-ethyl-5-pyridin-2-yl-2
2-氰基吡啶或2-氰基吡嗪与N-甲基硫代氨基脲反应得到(Z)-2-(氨基(吡啶-2-基)亚甲基)-N-甲基肼基碳硫酰胺(HPyAm4M)和(Z)-2-(氨基(吡嗪) -2-基)亚甲基)-N-甲基肼甲硫基酰胺(HPzAm4M)。在这些硫代半脲化合物的合成中,在甲醇中长时间回流加热,导致形成4-甲基-5-吡啶-2--2-基-2,4-二氢-[1,2,4]三唑-5-硫酮(HMPytat,1)和4-甲基-5-吡嗪-2-基-2,4-二氢-[1,2,4]三唑-5-硫酮(HMPztat,2)通过起始硫代半氨基甲酮的氧化环化。硫半脲酮与汞的反应(II的)盐,得到通式[汞柱(TAT)X](新配合物3,4)和[汞柱(Htat)2 X 2 ](5,7,9-11),以及[氢化3(HEPytat)2( EPytat)2 Cl 4 ]·3H 2 O(6)和[Hg(EPytat)(HEPytat)I]·H 2 O(8)(Htat