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首页> 外文期刊>Inorganic Chemistry Communications >N~2,S-versus N ,S-coordination in thiosemicarbazonate complexes:only a steric influence?
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N~2,S-versus N ,S-coordination in thiosemicarbazonate complexes:only a steric influence?

机译:N〜2,S对N,S配位在硫代半氨基甲酸酯配合物中:只有空间影响吗?

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摘要

The factors that determine the formation of N_(hydrazInic),S-or N_(iminic),S-coordinate thiosemicarbazonate complexes in the solid state are examined in the light of the X-ray structure of the complex[PbPh_2(EtGTSC)_2](centre dot)H_2O(HEtGTSC = ethylglyoxylate thiosemicarbazone).Thiosemicarbazonato species are versatile ligands derived from thiosemicarbazones(HTSC(1),Scheme 1)by loss of a proton from their hydrazinic N~2-H group.This deprotonation usually induces pi charge rearrangement leading to a thione-to-thiol evolution.If a metal cation M~(n+)is present,the thiamide group normally rotates 180 deg about the C~1-N~2 bond to chelate it via N~3 and S(2).However,the less favoured N~2,S-chelated alternative 3,in which S remains trans to N~3,has also been observed crystallographically,first in[TlMe_2 L](HL = p-anisalde-
机译:根据配合物的X射线结构[PbPh_2(EtGTSC)_2],研究了决定固态N_(肼基),S-或N_(亚胺基),S-配位硫代氨基甲酸酯配合物形成的因素。 (中心点)H_2O(HEtGTSC =乙醛酸硫代半碳酸钠)。硫代半碳氮酮类物质是从硫代半碳氮酮(HTSC(1),方案1)衍生而来的通用配体,其质子从其肼基N〜2-H基团中丢失,这种去质子化通常会诱发pi电荷。如果存在金属阳离子M〜(n +),则硫酰胺基团通常会绕C〜1-N〜2键旋转180度,以使其通过N〜3和S( 2)。然而,晶体学上也观察到了较不受欢迎的N〜2,S螯合的替代3,其中S仍反型为N〜3,首先出现在[TlMe_2 L](HL =对-茴香基-

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