Abstract
The halogenation of the heterobimetallic triple-decker complexes [(Cp*Fe)(Cp ''' Co)(mu,eta(5):eta(4)-E-5)] (E = P (1), As (6), Cp* = eta(5)-C5Me5, Cp ''' = 1,2,4-tri(tert-butyl)cyclopentadienyl) was investigated. Compound 1 has been oxidised to the isostructural ionic compounds [(Cp*Fe)(Cp ''' Co)(mu-PX)(mu,eta(2):eta(1):eta(1)-P4X4)][Y] (X = I, Y = [I3] (2), X = Br, Y = [FeBr4] (3)) and to the ...
Abstract
The halogenation of the heterobimetallic triple-decker complexes [(Cp*Fe)(Cp ''' Co)(mu,eta(5):eta(4)-E-5)] (E = P (1), As (6), Cp* = eta(5)-C5Me5, Cp ''' = 1,2,4-tri(tert-butyl)cyclopentadienyl) was investigated. Compound 1 has been oxidised to the isostructural ionic compounds [(Cp*Fe)(Cp ''' Co)(mu-PX)(mu,eta(2):eta(1):eta(1)-P4X4)][Y] (X = I, Y = [I3] (2), X = Br, Y = [FeBr4] (3)) and to the neutral species [(Cp*Fe)(Cp ''' Co)(mu-PCl2)(mu,eta(2):eta(1):eta 1-P4Cl4)] (4) and [(Cp*Fe) (Cp ''' Co)(mu-PCl2)(2)(mu,eta(1):eta(1)-P2Cl3)] (5). Compounds 2, 3 and 4 possess a heterobimetallic nortricyclane-like FeCoP(5 )core. The oxidation of the heavier homologue 6 with bromine and iodine afforded the homometallic complexes [(Cp ''' Co)(2)(mu,eta(4):eta(4)-As4X)][FeX4] (X = I (7) and X = Br (9)). With iodine as halogenating agent, the trinuclear monocation bearing an As6 prism as ligand [(Cp*Fe)(Cp ''' Co)(2)(mu(3),eta(4):eta(4):eta(4)-As-6)][FeI4] (8) was additionally isolated. When PCl5 was used as oxidizing agent, the initially folded As5 ligand planarised resulting in the dicationic species [(Cp*Fe)(Cp ''' Co)(mu,eta(5):eta(5)-As-5)][FeCl4](2) (10).
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