Patent ID: 6921824

Claim:
Ruthenium complexes of formula (I) wherein: L represents an heterocylic ligand containing at least two nitrogen heteroatoms wherein the electronic doublets of said nitrogen atoms are involved in the bond with two ruthenium atoms, X, Y and Z independent from one another represent: Cl − , OS(R 1 R 2 ), R 1 and R 2 , independent from one another, either represent: C 1 -C 6 alkyl, cycloalkyl, phenyl and aryl, or R 1 and R 2 together with the sulfur (S) atom, form a 5-7 membered ring, m is an integer ranging from 0 to 2, and when m is different from 0, the negative charge of the compound of formula (I) is neutralized by a Q counterion suitable for pharmaceutical use.