New FeMo and FeW fulvalene-bridge heterobimetallic complexes containing the ferrocenyl unit. Crystal structure of [(η-C5H5)Fe(μ-η:η-C5H4Ind)Mo(CO)2(η-C3H5)] (Ind 1-indenyl)

Convenient syntheses of the ferrocene-based fulvalene-bridged heterobimetallic complexes [(η-C5H5)Fe(μ-η:η-C5H4CnRm)M(CO)2(η-C3H5)] (M Mo or W; CnRm 1-indenyl, C5Me4 or C5H2Me2) are described. © 1995.