| abstract |
The present invention relates to a new family of mono, bis or tris (2,2'-substituted bipyridine) complexes of a metal chosen from iron, ruthenium, osmium or vanadium, the bipyridine being substituted by at least one electron donor group. According to the invention, this electron donor group is chosen from a hydroxy group, an alkoxy group, an aryloxy group or a primary, secondary or tertiary amine group. The invention also relates to processes for the preparation of these complexes. |