NMR spectra of silatranes and M ← N (M = C, Si, Ge, Sn, Pb) bond lengths in atranes: Substituent effects期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

NMR spectra of silatranes and M ← N (M = C, Si, Ge, Sn, Pb) bond lengths in atranes: Substituent effects

Authors:	Alexey N. Egorochkin Olga V. Kuznetsova Olga V. Novikova

Affiliation:	^a G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia ^b A.E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia

Abstract:	The literature data on X substituent influence on the ¹H, ²⁹Si and ¹⁵N NMR chemical shifts (δ) and coupling constants (J) of Si-substituted silatranes , as well as M-N bond lengths (d) in atranes (M = C, Si, Ge, Sn, Pb) have been analyzed. It was established for the first time that the δ, J and d values depend not only on the inductive and resonance effects but also on the polarizability of X substituents. The polarizability contribution ranges from 8% to 25%.

Keywords:	Silatranes NMR spectra Substituent effects Atranes Polarizability effect M &larr N bond lengths
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