Abstract
Reaction of the diiron propanedithiolate complex [μ-(SCH2)2CHO2CC6H5]Fe2(CO)6 (A) with bis-(diphenylphosphino)methane (dppm) in the presence of Me3NO·2H2O in MeCN yielded a mono-substituted complex [μ-(SCH2)2CHO2CC6H5]Fe2(CO)5(κ-dppm) (1), whereas in refluxing xylene gave a bridged complex [μ-(SCH2)2CHO2CC6H5]Fe2(CO)4(μ-dppm) (2). The structures of both complexes were fully characterized by spectroscopic methods and X-ray crystallography. In solid state, one phosphine atom of dppm in complex 1 occupies an apical position of the square pyramidal geometries of the Fe center or two phosphine atoms of dppm in complex 2 bridge two Fe centers in a cisoid dibasal conformation. The cyclic voltammograms of both complexes in the presence of HBF4 were investigated.
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