z-axis. Addition of MeI to [M(CO)2(tmtaa)Li(thf)] yields [M(tmtaaMe)(CO)2], where the methyl group is attached to the imidinate ring that contains the Li(thf) fragment, as shown by X-ray crystallography. The [M(tmtaaH)(CO)2] reacts with half an equivalent of [M2(COD)2(μ-OH)2] to give the mixed dimetal complexes [M(CO)2(tmtaa)M‘(COD)], where M,M‘ is either Rh,Rh or Rh,Ir, which react with CO to give
四氮杂大环杂环tmtaaH 2与[M 2(COD)2(μ-OH)2 ],M = Rh或Ir反应,得到[M(tmtaaH)(COD)],得到二羰基衍
生物,[M( tmtaaH)(CO)2 ],然后将其暴露于CO。COD和二羰基衍
生物M = Rh在
酰亚胺环的β-碳位上被MeOTf甲基化,得到[Rh(tmtaaHMe)(L 2)] +,其中L 2 = COD或(CO)2。[Rh(tmtaaHMe)(CO)2 ] [OTf]的晶体结构表明,甲基化位点是包含Rh(CO)2的亚
氨酸环分段。HOTf的质子化也发生在
酰亚胺环的β-碳位点,后者假定为包含Rh(L 2)片段的环。二羰基化合物在thf中被LiN(SiMe 3)2去质子化,得到[M(CO)2(tmtaa)Li(thf)]。M = Rh的晶体结构显示分子内Li-Rh距离为2.635(10)Å,沿着分子z轴排列的两个分子单元之间的分子间Rh···Rh接触距离为3