[3]Ferrocenophanes Containing Heteroelements

Abstract

The synthesis and characterization of 1,3-dichalcogena-[3]ferrocenophanes are described in which the central position of the triatomic bridge may be occupied by various main group and transition metal elements. Trinuclear [3Jferroceno-phanes Fe{(C₅H₄E)Y[(EC₅H⁴),FeI}, (Y = P, As, Sb) were obtained from the reactions of 1,1′-bis(trimethylstannyl-chalcogenato)-ferrocenes, Fe(C₅H₄E-SnMe₃)2 (E = S, Se, Te), with the trichlorides PCl₃, AsC1₃ and SbCl₃, respectively. Heterobimetallic complexes [Fe(C₅H₄E)₂]M(L)(η⁵-C₅Me_S) (M(L) = Rh(PMe,), Ir(PMe₃), Ir(PPh_l) and Ir(CN^tBu)) were prepared by reacting dilithium 1,1′-ferrocene-dichalcogenates Fe(C5H₄ELi), (E = S, Se, Te) with η⁵-pentamethylcyclopentadienyl half sandwich compounds (η^s-C₅Me₅)M(L)Cl₂. X-Ray data confirm the absence of bonding interactions between the two metals, Fe and M.