Long-range nuclear spin-spin coupling between 11B and 13C, 29Si or 119Sn: a promising tool for structural assignment
作者:Bernd Wrackmeyer
DOI:10.1016/s0277-5387(00)84848-2
日期:——
The influence of unresolved long-rangenuclearspin-spincoupling [nJ(11BX) (n > 1; X = 13C, 29Si or 119Sn)] on X resonances has been studied for aminoboranes (1 and 2), haloboration (2 and 4), hydroboration (5) and organoboration products of alkynes (6 and 7). The differential broadening of X resonances in the X NMR spectra arising from nJ(11BX) (most obvious for X= 119Sn) shows a qualitatively