related to the frontier orbitals presented by the d6 Ru(η-C5H5)L+ fragment (L = MeCN). The mechanism of formation of (1)is discussed. Tetramethylammonium bromide and chloride also react with (1) on u.v. irradiation in CH2Cl2 to form [RuX(η4-C4Ph4)(η-C5H5)][X = Br (4) or Cl (5)]. These complexes are also formed when (2) is reacted thermally with the corresponding halide anions. A related reaction occurs
的Ag [BF的除了4 ]到的溶液中的[Ru 2(CO)4(η-C 5 H ^ 5)2 ]和光子晶体2 pH值CH 2
氯2所导致η的形成4 -cyclobutadiene复杂的[Ru (CO)(η 4 -C 4博士4)(η-C 5 H ^ 5)] [BF 4 ](1)。的(溶液UV照射1)在MeCN给出的[Ru(NCMe)(η 4 -C 4博士4)(η-C 5 H ^ 5]] [BF 4 ](2),在结构上通过X射线晶体学鉴定。的η 4 -tetraphenylcyclobutadiene
配体不是协调如由的2.192(2)的Ru-C的距离,2.208(3),2.177(2),和2.175(2)埃,失真是对称地指示对于
钌与由所述呈现的前线轨道d 6茹(η-C 5 H ^ 5)L- +片段(L = MeCN中)。讨论了(1)的形成机理。
四甲基溴化铵和
氯化也与(反应1)在CH UV照射2
氯2,以形成[RUX(η