Département de chimie moléculaire

A route for the synthesis of coordinatively dissym. Fe(ii) polypyridine complexes [Fe(L)2L']2+ (L and L' are two different 2,2'-bipyridine derivs.) is described. The procedure is based on the use of the precursor [Fe(L)2(MeCN)2]2+ (L = 2,2'-bipyridine), which can be easily prepd. by electrochem. or chem. redn. of the $μ$-oxo diaqua diiron(III) complex [Fe2O(bpy)4(H2O)2]4+ in acidic MeCN soln. This procedure can be applied with success to the synthesis of covalently linked heterodinuclear complexes contg., for instance, Fe(bpy)32+ and Ru(bpy)32+ moieties. The electrochem. behavior of all new complexes is reported. [on SciFinder(R)]