heterocycle. The same template synthesis utilizing 3-azidopropyl isocyanide and complex [1c](PF6)2 gave the dicarbene complex [5](PF6)2 and, after addition of 2 equiv more of 3-azidopropyl isocyanide, the tetracarbene complex [6](PF6)2 with four protic NH,NH-NHC ligands derived from a six-membered heterocycle. The intermediate trans-di(NH,NH-NHC) platinum(II) complex [5](PF6)2 also reacts with 2 equiv
                                    2当量的2-
叠氮基乙基异
氰化物与四膦
铂(II)配合物[ 1a – c ](X)2(a,PR 3 = PMe 3;b,PR 3 = PMe 2 Ph; c,PR 3 = PMePh 2)通过膦取代和
异氰酸酯配体的模板控制环化生成反式-di(NH,NH-NHC)络合物[ 2a – c ](X)2。[ 2c ](PF 6)2的处理用另外的2当量的2-
叠氮基乙基异
氰化物得到四碳烯配合物[ 3 ](PF 6)2,其带有衍生自五元杂环的四个质子NH,NH-NHC
配体。利用3-
叠氮基
丙基异氰化物和配合物[ 1c ](PF 6)2进行的相同模板合成得到了二卡宾配合物[ 5 ](PF 6)2,在添加了2当量的3-
叠氮基
丙基异氰化物后,得到了四碳烯配合物[ 6 ](PF 6)2具有衍生自六元杂环的四个质子NH,NH-NHC
配体。中间反式-二(NH,NH-NHC)
铂(II)配合物[ 5 ](PF 6)2也与2当