Several examples are provided that NHSi (N-heterocyclic silylene) ligands are much better metal–metal bridging ligands as compared to NHCs and that NHSi also tends to insert much more easily into metal–halide bonds of transition metal complexes. Dipp2NHSi (1,3-bis(2,6-diisopropyphenyl)-1,3-diaza-4-silacyclopent-4-en-2-yliden) reacts with [(η5-C5H5)Fe(CO)2}2] and [(η5-C5H5)2Ni] to yield, in contrast
提供了几个例子,与NHC相比,NHSi(N-杂环甲
硅烷基)
配体是更好的
金属-
金属桥连
配体,并且NHSi还倾向于更容易插入过渡
金属配合物的
金属-卤化物键中。卜先生2 NHSi(1,3-双(2,6-二diisopropyphenyl)-1,3-二氮杂-4-
硅杂环戊-4-烯-2-亚基)反应以[(η 5 -C 5 H ^ 5)的Fe( CO)2 } 2 ]和[(η 5 -C 5 H ^ 5)2的Ni]得到,而相比之下,用于与的NHCs,双核亚甲
硅基桥接的配合物[(η类似的转换所获得的结果5 -C 5ħ 5)的Fe(CO)} 2(μ-CO)(μ-卜先生2 NHSi)](1)和[(η 5 -C 5 H ^ 5)的Ni(μ-卜先生2 NHSi)} 2 ](2)。与反应[(η 5 -C 5 H ^ 5)的Ni(PPH 3)(CL)]引线与所述亚甲
硅基插入
镍氯化物键[(η 5 -C 5 H ^ 5)的Ni(PPH