Bonding studies of compounds of boron and the group IV elements. Part III. First ionisation potentials of some simple boron compounds by electron impact and by a new empirical molecular orbital method
作者:M. F. Lappert、M. R. Litzow、J. B. Pedley、P. N. K. Riley、T. R. Spalding、A. Tweedale
DOI:10.1039/j19700002320
日期:——
F, Cl, Br, I, NMe2, OMe, OEt, OPrn, SMe, and Et), some from previously unknown neutral molecules, obtained by redistribution reactions, have been characterised mass spectrometrically. The first ionisation potentials of the parent ions from the simple boron compounds BX3, BX2Y, and BXYZ have been measured. (The data for the boron halides were in Part II.) Comparison of these data are made with a model
许多分子离子BX 2 Y +和BXYZ +(X,Y和Z = F,Cl,Br,I,NMe 2,OMe,OEt,OPr n,SMe和Et),其中一些来自以前未知的中性分子通过质谱分析表征了通过再分布反应获得的。来自简单硼化合物BX 3,BX 2的母体离子的第一电离能Y和BXYZ已被测量。(有关卤化硼的数据在第II部分中。)使用基于对称参数和简单归纳参数的模型对这些数据进行比较,从而可以得出适当的相关图。这些是平滑的曲线,证明了数据的可靠性,并可以预测其他分子的第一个电离势。第一电离电势的复合之间的反键相互作用的p上的两个配位体原子-orbitals和之间的键合相互作用p π配体和硼原子上的-轨道。对于三卤化硼和混合三卤化物,似乎前者是主要术语,而其他化合物则相反。一个给定的相互作用p π上的配位体-orbital和p π上的硼原子-orbital在顺序B-N> B-O系列≈B-S> B-哈尔减