in aldehyde deformylation reactions. However, the spectroscopic and reactivity properties of 3a/3b are found to be distinct relative to that of the previously reported [LNiO2Cu(MeAN)]+ complex containing a more basic (nucleophilic) N,N,N′,N′,N′-pentamethyl-dipropylenetriamine (MeAN) ligand at the copper centre. The geometry and electronic properties of the copper ligands affect the electron density
已经在低温下用光谱法捕获了两个新的异双
金属[LNiO 2 Cu(RPY2)] +(RPY2 = N-取代的双2-
吡啶基(
乙胺)
配体,其中R =
茚满,3a或R = Me,3b。它们是通过使带有
β-二酮基
配体(L = [HC-(CMeNC 6 H 3(iPr)2)2 ])的单核侧面LNi II超氧代前体与Cu(I)配合物反应而制备的。与已知高价[M 2(μ-O)2 ] n +中的羰基相反(M = Fe,Co,Ni,Cu)核具有亲电反应性,3a和3b则具有相当亲核的羰基氧羰基,在醛的甲酰化反应中具有活性。然而,光谱和反应特性图3a / 3b中被发现相对不同是使之与以前报道[LNiO 2的Cu(平均)] +含有复杂的一个更基本的(亲核)Ñ,Ñ,Ñ ',Ñ ',ñ
铜中心的'-五甲基-
二丙烯三胺(MeAN)
配体。
铜配体的几何形状和电子性质会影响异双核Ni(μ-O)2 }核的氧原子的电子密度,并且3a