Synthesis and Reactivity of the Phosphinoboranes R<sub>2</sub>PB(C<sub>6</sub>F<sub>5</sub>)<sub>2</sub>
作者:Stephen J. Geier、Thomas M. Gilbert、Douglas W. Stephan
DOI:10.1021/ic102003x
日期:2011.1.3
The phosphinoboranes [R2PB(C6F5)2]2 (R = Et 1, Ph 2) and R2PB(C6F5)2 (R = tBu 3, Cy 4, Mes 5) were synthesized from the reaction of (C6F5)2BCl and the corresponding lithium phosphide. The relationships between B−P distance, P pyramidality, and the extent of BP multiple bonding were further explored computationally. Natural Bond Order (NBO) analyses of 3 and 4 showed that the π-bonding highest occupied
合成了膦硼烷[R 2 PB(C 6 F 5)2 ] 2(R = Et 1,Ph 2)和R 2 PB(C 6 F 5)2(R = t Bu 3,Cy 4,Mes 5) (C 6 F 5)2 BCl与相应的磷化锂的反应中得到的产物。BP距离,P锥度和BP多重键的范围之间的关系进一步进行了计算。自然债券订单(NBO)分析3图4和图4表明,π键结合的最高占据分子轨道(HOMO)是高度极化的。此外,路易斯酸碱加合物R 2(H)P·B(H)(C 6 F 5)2(R = Et 6; Ph 7;t Bu 8; Cy 9; Mes 10)的制备是通过膦R 2 PH与硼烷HB(C 6 F 5)2的反应。化合物1和2没有与H 2反应的迹象; 然而,化合物3的反应观察到H 2和4与H 2给出8和9。在一组相关的反应中,化合物3和4与H 3 NBH 3或Me 2(H)NBH 3反应,分别导致生成8和9。通过计算检查了(CF