studied by variable temperature 119mSnMössbauer spectroscopy, IR, and 1H NMR techniques. The bonding interaction between the metal and the heterocyclic ligand can be described without invoking a π-bonding mechanism to account for the resolvable quadrupole hyperfine interaction observed in the Mössbauerspectra of these compounds. The temperature dependence of the 119mSn recoil-free fraction in these
许多新化合物的4-C键合吡啶基团连接到有机锡部分上,包括(C 6 H 5 3 Sn-py,(C 6 H 5)3 Sn-py NO和(CH 3)已合成3 Sn-py-Sn(CH 3)3 Cl,并通过119m可变温度SnMössbauer光谱学,IR和1研究。1 H NMR技术。可以描述金属与杂环配体之间的键相互作用而无需调用π键机制来解释这些化合物在Mössbauer光谱中观察到的可分辨四极超精细相互作用。这些共价固体中119m Sn无反冲级分的温度依赖性是单体单元的特征,但在(CH 3)3 Sn-py-Sn(CH 3)3 Cl中观察到的面积比的温度依赖性与从Gol'danskii-Karyagin效应理论中得出的结论。