Derivatives of Δ<sup>2</sup>- tetrazaboroline. Part VII. Unsymmetrically N-substituted Δ<sup>2</sup>-tetrazaborolines
作者:J. B. Leach、J. H. Morris、P. G. Perkins
DOI:10.1039/j19700001077
日期:——
The products of the reactions between o-, m-, and p-mono-subsituted anilineâboranes, XC6H4NH2,BH3 and phenyl azide have been shown to be mixtures of the 1,4-substituted-Î2-tetrazaborolines Ph2N4BH, Ph(XC6H4)N4BH, and (XC6H4)2N4BH; this randomization of substituents appears to be a general feature in preparations of unsymmetrically substituted tetraza-Î2-borolines. The preparation and properties of 1,4-di-p-chlorophenyl-Î2-tetrazaboroline is reported. Simple calculations on the unsymmetrically substituted phenyl tetrazaborolines have yielded values for the Ï-bond orders, Ï-charge distributions, Ï-stabilization energies, and energies of bands expected for their first electronic transitions.
o-、m- 和 p- 单取代苯胺-硼烷 XC6H4NH2·BH3 与苯基叠氮化物反应的产物已被证明为 1,4-取代的 Δ2-四氮四硼烯混合物 Ph2N4BH、Ph(XC6H4)N4BH 和 (XC6H4)2N4BH;这种取代基的随机化似乎是制备不对称取代的四氮Δ2-硼烯的一般特征。文中报道了 1,4-二对氯苯基Δ2-四氮四硼烯的制备及其性质。对不对称取代的苯基四氮四硼烯进行简单计算,得出了 π 键级、π 电荷分布、π 稳定能以及其首次电子跃迁所期待的带能量值。