A Mixed Oxidation State, Binuclear Iron Complex Containing an Unsymmetrically Coordinating Ligand. A Ligand-Induced Switch in Redox Behavior
作者:Joe H. Satcher,、Michael W. Droege、Marilyn M. Olmstead、Alan L. Balch
DOI:10.1021/ic9913177
日期:2001.3.1
Binuclear [(FeFeIII)-Fe-II(BMDP)(O2CPh)(3)](BF4) (1) was obtained by treating an acetonitrile solution of the fully reduced (FeFeII)-Fe-II(BMDP)(O2CPh)(MeOH)(1.5)(H2O)(0.5)](BF4)(2) with 5 equiv of benzoate and then exposing the mixture to oxygen. Examination of [(FeFeIII)-Fe-II(BMDP)(O2CPh)(3)](BF4) by X-ray crystallography reveals the localized, mixed oxidation state nature of the cation in the solid state. H-1 NMR and magnetic susceptibility data for the new complex are also reported. In the absence of dioxygen and other oxidants, treatment of (FeFeII)-Fe-II(BMDP)(O2CPh)-(MeOH)(1.5)(H2O)(0.5)](BF4)(2) With excess benzoate results in the formation of [(FeFeII)-Fe-II(BMDP)(O2CPh)(2)](BF4)(2), which has also been characterized by X-ray diffraction.