金属核的磁共振研究——Ⅲ锡(Ⅳ)有机化合物的^(119)Sn、^(117)Sn-NMR谱及溶剂配位络合物的形成

NMR STUDIES OF METALLIC NUCLEI Ⅲ THE ^(119)Sn,^(117)Sn-NMR SPECTRA OF ORGANO-TIN (Ⅳ) COMPOUNDS AND THE COMPLEX FORMATION WITH DONOR SOLVENT

本文测定了二十个含有烷基、苯基、烯丙基、五元杂环基及其它极性基团的Sn(Ⅳ)化合物的^(119)Sn、^(117)Sn-NMR谱,讨论了各种取代基对Sn核电子云密度及磁屏蔽的影响,考察了^(119)Sn谱峰随溶剂、浓度、温度的变化,研究了Ph_3SnCl化合物与DMSO配位生成配合物的过程,测出了平衡常数和自由能的变化。

The 119Sn,117Sn-NMR spectra were recorded for twenty organo-tin (IV) compounds containing alkyl, phenyl, allyl, five -membered heterocyclcs and other polar groups. The substituent influence on tin electron density and magnetic shielding were discussed. The effects of solvents, concentration and temperature on 119Sn resonances were investigated. The complex formation of Ph1SnCl with DMSO was studied and the equilibrium constant K and AG were calculated.