Insertion of XCY heteroallenes into unsupported Zr–M bonds (M = Fe, Ru)

Abstract

The unsupported early–late heterobimetallics HC(SiMe₂NC₆H₄F-2)₃Zr–M(CO)₂(η-C₅H₅)(M = Fe 1, Ru 2) undergo highly selective reactions with XCY heteroallenes to yield the insertion products HC(SiMe₂NC₆H₄F-2)₃Zr(XYC)M(CO)₂(η-C₅H₅)(X = O, S; Y = O, S, NR); single-crystal X-ray structure analyses of HC(SiMe₂NC₆H₄F-2)₃Zr(S₂C)Fe(CO)₂(η-C₅H₅) 4 and HC(SiMe₂NC₆H₄F-2)₃Zr(SCNPh)Fe(CO)₂(η-C₅H₅) 10 establish the mode of coordination of the substrates to the two metal centres.