employed. The formation of the trinuclear complexes [Mo(CO)3(η2-NN)(X)]2Hg is favoured over the expected bimetallic derivatives, in which two metals are bridged by the dppm ligand. Bimetallic compounds are obtained when bulky ligands are present, such as dmp bonded to a molybdenum atom or I bonded to mercury, and only in the latter case is a MoHg complex bridged by dppm obtained.
摘要配合物[Mo(CO)3(η2-NN)(η1-dppm)]的反应[NN =
2,2'-联吡啶(bpy),1,10-
菲咯啉(phen),2,9-二甲基-1,10-
菲咯啉(dmp); dppm =双(
二苯基膦基)
甲烷与HgX2(X = Cl,Br,I,CN,SCN)生成三种类型的化合物[Mo(CO)3(η2-NN)(X)] 2Hg(NN = bpy, phen; X = Cl,Br,CN,SCN。NN = dmp; X = CN),[Mo(CO)3(η2-NN)(μ-dppm)HgI] HgI3,(NN = bpy,phen; X = I)和[Mo(CO)3(η2-dmp)(HgX)(X)](X = Cl,Br,I,SCN),具体取决于所使用的NN-
配体和
汞衍
生物。三核配合物[Mo(CO)3(η2-NN)(X)] 2Hg的形成优于预期的双
金属衍
生物,其中两种
金属被dppm
配体桥接。当存在庞大