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

Abstract

The reaction of bisgermavinylidene [(Me₃SiNPPh₂)₂CGe→GeC(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.