A novel synthesis of metallogermacyclopropane and molybdenum bis(iminophosphorano)carbene complexes from bisgermavinylidene

The reaction of bisgermavinylidene [(Me3SiNPPh2)2CGeGeC(PPh2NSiMe3)2] (1) with M(CO)5(THF) ( M = Cr, W, Mo) afforded the metallagermacyclopropane [(Me3SiNPPh2)2CGeM(CO)3{M(CO)5}] [M = W (2), Cr (3), Mo (4)]; in one of the reactions, compound 4 reacts further to give a pincer carbene complex [(CO)3Mo{C(Ph2PNSi Me3)2}] (5); the X-ray structures of compounds 2 and 5 have been determined.