bromide counter anion with either hexafluoroarsenate or hexfluoroantimonate anions revealed weak hydrogen bonds between the P‑H bonds of the boronium cations and the anions, that appeared through NMR studies to be retained in solution (where hydrogen bonding order was determined to be Br‑ > [SbF6]‑/[AsF6]‑). This was further demonstrated by comparison of solid-state structures and solution NMR data of
BrH2BSMe2与伯和仲膦的反应提供了一系列形式为[H2B(PR3)2] Br的
硼盐(PR3 = PHCy2 1;
PHPh2,2; PH2Cy,3),已被充分表征,包括固态决心。笨重的叔膦(例如PCy3和PPh3)与
BSMe2的反应不会超出膦稳定的
溴硼烷加合物的范围,但是,较小的叔膦PMe2Ph易于形成[H2B(PMe2Ph)2] Br(4)。通过原位NMR光谱观察到不对称
硼盐[H2B(PH2Cy)(PHCy2)] Br(5)和[H2B(PHCy2)(
PHPh2)] Br(6)的形成,但是发现这些化合物是自发形成的即使在‑78°C下长时间保存,其各自的同膦
硼酸阳离子也不成比例。发现
二膦和三膦可形成闭环
硼盐,得到[H2B(2-P,P-
二膦)] Br(
二膦= dppe,7; dcpe,8; dmpe,9; dppf,10; dppf,其中[ AsF6] –抗衡离子,11;
安非他命,12)。由于[BrHB(dcpe)]