Diversions En Route to Alkylidyne Complexes of Iron

摘要: The Mayr carbyne synthesis is readily extendable to aminomethylidyne complexes of group 6 metals, e.g., [M(≡CNiPr2)(O2CCF3)(CO)3(PPh3)] (M = Cr, Mo, W) result from successive treatment [M(CO)6] with LiNiPr2, (CF3CO)2O and PPh3. same approach [Fe(CO)5] however, provides the trifluoromethyl-carbamoyl complex [Fe(η-OCNiPr2)(CF3)(CO)2(PPh3)], whilst replacing LiNiPr2 LiC6H3Me2−2,6 dinuclear [Fe2(μ-OCC6H3Me2-2,6)2(CO)5(PPh3)].Reaction K[HB(pz)3] (pz pyrazol-1-yl) [M(≡CNiPr2)(CO)2{HB(pz)3}] similar [Fe(η-OCNiPr2)(CF3)(CO)2(PPh3)] unusual metallaoxetene [Fe{C(NiPr2)OCF2}(CO){HB(pz)3}] via fluoride abstraction.