Tris[methylaminobis(difluorophosphine)]metal(0) derivatives of chromium, molybdenum, and tungsten: new volatile carbonyl-free zerovalent metal derivatives of high thermal and oxidative stabilities

Abstract

U.v. irradiation of [M(CO)₆](M = Cr, Mo, and W) with excess of MeN(PF₂)₂ in Et₂O solution results in complete substitution of all six carbonyl groups to give colourless volatile compounds [M{(PF₂)₂NMe}₃](M = Cr, Mo, and W) which exhibit high thermal and oxidative stabilities.