unprecedented reaction mode for a dioxygen complex of a late transition metal, as the O2-activating complex 1 is partially regenerated upon oxygen transfer from 4 to the substrate. All these reactions show that oxygen transfer from 4 to an organic substrate effectively competes with oxidation of the dcpe ligand.
16电子
氢化物[RuH(d
CPE)2 ] PF 6(1 ·PF 6)[d
CPE = 1,2-双(
二环己基膦基)
乙烷]的晶体结构表明Ru与环己基CH 2接触短,在无序的四苯基
硼酸盐[RuH(d
CPE)2 ] BPh 4(1 ·BPh 4)中未观察到。1 ·PF 6与[RuCl(d
CPE)2 ] PF 6(2)和反式-[RuCl 2(d
CPE)2 ](3的X射线结构的比较)表明在稳定这16个电子物种时,电子效应与空间效应协同作用。的氢基双氧络合物[期RuH(η 2 -O 2)(D
CPE)2 ] +(4)中,由反应形成1为O 2,不与亲核试剂如烯烃和反应PPH 3,但是示出亲核性,与活化烯烃(TCNE,
2-甲基-1,4-萘醌)和羰基化合物[
庚醛,PhC(O)Cl]反应。的反应4用庚示出了用于后过渡
金属的双氧络合物的前所未有反应模式,如将O 2 -activating复杂1氧从4转移到底物时,部分