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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >SYNTHESIS AND CHARACTERIZATION OF CONFIGURATIONALLY STABLE DIORGANOTIN(IV) COMPLEXES WITH TIN AS A CHIRAL CENTRE [German]
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SYNTHESIS AND CHARACTERIZATION OF CONFIGURATIONALLY STABLE DIORGANOTIN(IV) COMPLEXES WITH TIN AS A CHIRAL CENTRE [German]

机译：以锡为手性中心的构型稳定的二有机锡（IV）配合物的合成与表征[德国]

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摘要

Contrary to the high optical stability of tetraorganotin compounds most heteroleptic organic tin compounds are configurationally instable. We report the synthesis and the characterization of some new enantiomeric and diastereomeric diorganotin(IV) complexes of stable configuration with tin as a chiral centre. The stabilization of the chiral tin atom was realized by complexation with tridentate diacidic esterhydrazone ligands H2L, which prevent an interconversion at the stereogenic centre. Multinuclear NMR-studies in solution demonstrate, that the configuration of the chiral tin center is configurationally stable up to 160 degrees C. The molecular structure of the complexes Neophyl-phenyl-tin-2[(2-methylmercaptothiocarbonyl)-hydrazono]propionate IIb and (2-Methyl-butyl-1-yl)-phenyl-tin-[S-methyl-beta-N-(2-salicylmethylidene)th iocarbazate] IIIg have been determined by single crystal X-ray diffraction analysis. [References: 27]
机译：与四有机锡化合物的高光学稳定性相反，大多数杂配有机锡化合物在结构上不稳定。我们报告了合成和表征的一些新的对映体和非对映体二有机锡（IV）配合物稳定配置与锡为手性中心。手性锡原子的稳定是通过与三齿二酸酯complex配体H2L络合来实现的，这防止了立体中心的相互转化。溶液中的多核NMR研究表明，手性锡中心的构型在高达160摄氏度的条件下是稳定的。络合物Neophyl-phenyl-tin-2 [（2-甲基巯基硫代羰基）-肼基]丙酸酯IIb和通过单晶X射线衍射分析确定了（2-甲基丁基-1-基）-苯基-锡-[S-甲基-β-N-（2-水杨基亚甲基）碘代咔唑] IIIg。 [参考：27]

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