A comparison of modified CNDO/2 calculations and the photoelectron, NMR and UV spectroscopic properties of boron-substituted monophenylboranes
作者:Brian G. Ramsey、Shane J. O'neill
DOI:10.1016/s0022-328x(00)90848-9
日期:1977.11
Substituted boryl, BX2, substituent effects on the ultraviolet, hydrogen NMR and photoelectron spectra of benzene are compared with the results of modified CNDO/2 calculations. The substituents BF2, BCl2, B(OR)2 and BR2 are characterized by the relative degree of the electronegativity of X and π bonding to boron. Intramolecular charge transfer UV transitions are identified where BX2 is BCl2 or BR2
将取代的硼基BX 2,取代基对苯的紫外线,氢NMR和光电子光谱的影响与改进的CNDO / 2计算结果进行了比较。取代基BF 2,BCl 2,B(OR)2和BR 2的特征在于X和π键对硼的电负性的相对程度。在BX 2为BCl 2或BR 2的情况下,鉴定了分子内电荷转移的UV跃迁。与其他基团相反,B(OR)2导致前两个苯π电离能降低。