The synthesis and properties of derivatives, and a high-yield general route to mono- and di-substituted derivatives of ; the crystal and molecular structure of

Article abstract of DOI:10.1016/0022-328X(88)89099-5

The clusters (1: R = Me, C3H5, C6H5, or C6H4-2-Me) have been prepared at low temperature from and RCN in the presence of Me3NO.Compounds 1 react essentially quantitatively with a wide range of two-electron donors, L, (viz.: CO, PPh3, P(OMe)3, PPh2H, PPh2Me, PF3, CyNC (Cy = cyclohexyl), P(OEt)3, SbPh3, PBu3, AsPh3, or SnR2 (R = CH(SiMe3)2)) to give (2).In some cases (2), on treatment with Me3NO and then L' (L' = a second two-electron donor) yields in high yield.The crystal and molecular structures of 1 (L = NCC6H4Me-2) have been determined by a full single crystal structure analysis, and shown to have an axial nitrile coordinated at the unique iron atom, with two CO groups bridging the other two metal atoms.