首页> 外文期刊>Research Journal of Chemical Sciences >Synthesis, characterization and thermal studies of mixed ligand mercury(II) complexes of N-hydroxymethylsaccharin (Sac-CH2OH) and phosphine or heterocyclic amine co-ligands
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Synthesis, characterization and thermal studies of mixed ligand mercury(II) complexes of N-hydroxymethylsaccharin (Sac-CH2OH) and phosphine or heterocyclic amine co-ligands

机译:N-羟甲基糖精(Sac-CH2OH)与膦或杂环胺共配体的混合配体汞(II)配合物的合成,表征和热研究

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Reaction of mercury(II) acetate Hg(Ac)2 with two equivalents of N-hydroxymethylsaccharin (Sac-CH2OH) in the presence of NEt3 afforded the presumably tetrahedral complex [Hg(K2-Sac-CH2O)2] (1). Reaction of (1) with one equivalent of the bidentate ligands (L-L); Ph2P(CH2)nPPh2, (n=1 dppm; 2 dppe; 3 dppp; 4 dppb), Ph2P(S)(CH2)P(S)Ph2 (dppmS2) Ph2P(O)CH2CH2P (O)Ph2 (dppeO2), bipyridine (bipy) and phenanthroline (phen) afforded tetrahedral complexes of the type [Hg(K1-Sac-CH2O)2(L-L)]. The reaction with two equivalents of the monodentate ligands (L); Ph3P, Ph3PO, Ph3PS or pyridine (py) gave [Hg(K1-Sac-CH2O)2L2]. The N-hydroxymethylsaccharinate anion acts as a monodentate ligand to the mercury center through the hydroxymethyl oxygen atom. The complexes were characterized by physico-chemical and spectroscopic methods. The thermal decomposition of six of the prepared complexes were studied using thermogravimetry (TG) and differential thermal analysis (DTA). [Hg(K1-Sac-CH2O)2(bipy)] showed a higher thermal stability.
机译:在NEt3存在下,乙酸汞(II)Hg(Ac)2与两当量的N-羟甲基糖精(Sac-CH2OH)反应,得到大概四面体的络合物[Hg(K2-Sac-CH2O)2](1)。 (1)与一当量的二齿配体(L-L)反应; Ph2P(CH2)nPPh2,(n = 1 dppm; 2 dppe; 3 dppp; 4 dppb),Ph2P(S)(CH2)P(S)Ph2(dppmS2)Ph2P(O)CH2CH2P(O)Ph2(dppeO2),联吡啶(bipy)和菲咯啉(phen)得到[Hg(K1-Sac-CH2O)2(LL)]类型的四面体复合物。与两当量的单齿配体(L)反应; Ph3P,Ph3PO,Ph3PS或吡啶(py)得到[Hg(K1-Sac-CH2O)2L2]。 N-羟甲基糖精阴离子通过羟甲基氧原子作为汞中心的单齿配体。配合物通过物理化学和光谱法表征。使用热重分析(TG)和差热分析(​​DTA)研究了六种制备的配合物的热分解。 [Hg(K1-Sac-CH2O)2(bipy)]显示出更高的热稳定性。

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