1b; and X = 4, 1c) containing two potential nucleophilic centers have been investigated to elucidate which center is the stronger nucleophile toward methyl iodide. On the basis of DFT calculations, complexes 1b and 1c are predicted reacting with MeI through the free nitrogen donor to form N-methylated platinum(II) complexes, while complex 1a reacts through oxidative addition on platinum to give a platinum(IV)
翻转环
金属化
铂(II)配合物[
PTME(2,X'-BPY-H)(PPH 3)],(X = 2,图1A ; X = 3,1B和X = 4,; 1C含有两个潜在亲核)已经研究了中心以阐明哪个中心是对甲基
碘更强的亲核试剂。根据DFT计算,预测配合物1b和1c通过游离氮供体与MeI反应形成N-甲基化的
铂(II)配合物,而配合物1a通过在
铂上氧化加成反应而生成
铂(IV)配合物,这与实验结果一致。络合物选择性差异的原因基于N-甲基化与氧化加成反应所需的能垒讨论了图1a – 1c。