radically different. No agostic σ-B–H complex could be observed, the reaction leading to the isolation of a new bis-σ borane aryl-ruthenium complex via B–C bond cleavage and Ru–C bond formation. Reactivity studies of this complex with dihydrogen and/or HBArF4 as a proton source enable the formation of a tethered chiral-at-Ru piano-stool cationic complex.
用的反应性相比ø -Ph 2 P(C 6 H ^ 4 -CH 2)BH(N我
镨2)与[期RuH 2(η 2 -H 2)2(PCY 3)2 ]中,所述膦基的行为Ph 2 P(CH 2 –C 6 H 4)BH(N i Pr 2)完全不同。没有观察到巨大的σ-B-H络合物,该反应导致通过BC键断裂和Ru-C键形成分离出新的双σ-
硼烷芳基-
钌络合物。用二氢和/或HBAr F 4作为质子源的这种络合物的反应性研究使得能够形成束缚的手性Ru钢琴凳式阳离子络合物。