for complexation studies on various transition metals (NiII, PdII and RhI). Sulfur does not coordinate the nickel centre, whereas the two functional groups bind the palladium centre to form a dinuclear compound. Cationic rhodium(I) complexes have also been prepared and preliminary catalytic tests show that they have good activity for the hydrosilylation of ketones. (© Wiley-VCH Verlag GmbH & Co. KGaA
五个新的双功能
咪唑鎓-
硫醚
配体,通式为 RS(
CH2)n(
咪唑鎓)+ArBr–(n = 2 或 3,R = Et 或 tBu,Ar = 2,4,6-三甲基苯基或 2,6-二异丙基苯基)已通过一般方法以良好的总产率合成,并用作 N-杂环卡宾前体,用于各种过渡
金属(NiII、PdII 和 RhI)的络合研究。
硫不与
镍中心配位,而两个官能团与
钯中心结合形成双核化合物。还制备了阳离子
铑(I)配合物,初步催化试验表明它们对酮的氢化
硅烷化具有良好的活性。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)