Patent ID: 7579295

Claim:
A complex of formula (II): [Ru(L) 1 (L′) 1 XY] (II) wherein: X and Y represent, simultaneously or independently, a hydrogen or chlorine atom, a methoxy, ethoxy or isopropoxy radical, or a CH 3 COO or CH 3 CH 2 COO radical; L′ represents a bidentate P-P ligand of formula wherein R 2 and R 3 represent a linear, branched or cyclic C 2 to C 6 alkyl group or an aromatic ring, possibly substituted, and Q represents the butane-1,4-diyl radical, possibly substituted, a ferrocenediyl or a binaphthyldiyl radical, possibly substituted; the possible substituents of the Q group are C 1 to C 5 alkoxy or polyalkyleneglycol groups, C 1 to C 4 alkyl groups, or C 5 to C 10 cycloalkyl or aromatic groups; and L is a ligand of formula (V), (V′), (VI), or (VI′) wherein: the dotted lines in formula (V′) or (VI′) indicate the presence of a phenyl or a naphthyl group; G′ represents a R 6 C═NR 1 group or a C═N function-containing heterocycle, possibly substituted and possibly containing other heteroatoms; R 1 represents a hydrogen atom or a C 1 to C 4 linear or branched alkyl group, possibly substituted; R 2 and R 3 are as defined above; b represents 1 or 2; R 6 and R 7 represent, simultaneously or independently, a hydrogen atom, a linear or branched C 1 to C 4 alkyl group, possibly substituted, or an aromatic ring possibly substituted; or R 6 and R 1 may optionally be bonded together to form a saturated heterocycle, possibly substituted and possibly containing other heteroatoms; the possible substituents of R 1 to R 3 , R 6 and R 7 are C 1 to C 5 alkoxy or polyalkyleneglycol groups, C 1 to C 4 alkyl groups, C 5 to C 10 cycloalkyl or aromatic groups.