Group IVB metalloidal substituent effects in the naphthalene system by fluorine-19 nuclear magnetic resonance
作者:William Adcock、William Kitching
DOI:10.1039/c29700001163
日期:——
19 F Substituent chemical shift (SCS) data for substituents of the type Me3M (where M represents Si, Ge, Sn, and Pb) attached to the naphthalene system provide experimental evidence that all the metalloidal substituents engage in dπ–pπ conjugative electron-withdrawal (–M) in the ground state: and suggested that certain approaches to the analysis of 19F SCS may be invalid.
19 ˚F取代基的化学位移(SCS)的类型的Me的取代基数据3附接至萘系统M(其中,M表示硅,锗,锡,和铅)提供了实验证据表明,所有的metalloidal取代基从事d π - p π处于基态的共轭电子提取(– M):并建议某些分析19 F SCS的方法可能无效。