Abstract

The treatment of ?-and ?-cyclodextrins with the half-sandwich complexes of iron afford the inclusion compounds CpFe(L2)X·CD (? and ?) (X = Cl, I; L = CO; L2 = dppe, dppe = (Ph)2P(CH2)2P(Ph)2), [CpFe(L2)L?]PF6·CD (? and ?) L? neutral donor ligands and [(Cp(dppe)Fe)2-?-CN]PF6·2CD (? and ?). The inclusion compounds [Cp(dppe)Fe-NCCH3]PF6 · ?-CD and [Cp(dppe)Fe-(?1-dppm)]PF6 · ?-CD have a laminar structure. The ?-and ?-cyclodextrin encapsulation effect on the electro-oxidation of the binuclear complex was studied using cyclic voltammetry. The electron-transfer reactions associated with the oxidation of the two different N-bonded and C-bonded organometallic fragments are substantially affected by ? and ? encapsulation.