Bamford Karlee L, Qu Zheng-Wang, Stephan Douglas W
Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada.
Mulliken Center for Theoretical Chemistry , University of Bonn , Beringstr. 4 , D-53115 Bonn , Germany.
J Am Chem Soc. 2019 Apr 17;141(15):6180-6184. doi: 10.1021/jacs.9b02510. Epub 2019 Apr 5.
Reaction of dihydrogen and the borinium cation salt [MesB][B(CF)] gave an arene-stabilized mesityl-borenium cation, which isotopically scrambles HD. Similarly, reaction with triethylsilane gave the diboranium cation [MesB(μ-H)(μ-Mes)BMes] featuring three bridge-bonds between two boron centers. Reaction of same (MesBH) with Brønsted acid also afforded the same diboranium whereas the corresponding reaction with (MesBH) yielded the triboron cation [HB(μ-H)(μ-Mes)B(μ-Mes)(μ-H)BH].
氢气与硼鎓阳离子盐[MesB][B(CF)]反应生成了一种芳烃稳定的均三甲苯基硼鎓阳离子，该阳离子会使HD发生同位素交换。同样，与三乙基硅烷反应得到了二硼鎓阳离子[MesB(μ-H)(μ-Mes)BMes]，其在两个硼中心之间具有三个桥键。相同的（MesBH）与布朗斯特酸反应也得到了相同的二硼鎓阳离子，而与（MesBH）的相应反应则生成了三硼阳离子[HB(μ-H)(μ-Mes)B(μ-Mes)(μ-H)BH]。
