Patent ID: 7494964

Claim:
A metal complex compound of formula (1a) [L n Me m X p ] z Y q (1a), wherein Me is manganese which is present in oxidation state II, III, IV or V, or iron which is present in oxidation state II, III or IV, X is a coordinating or bridging radical, n and m are each independently of the other an integer having a value of from 1 to 8, p is an integer having a value from 0 to 32, z is the charge of the metal complex, Y is a counter-ion, q=z/(charge Y), and ligand L is a compound of formula (3) wherein R′ 6 is cyano; halogen; nitro; —COOR 12 or —SO 3 R 12 ; —SR 13 , —SO 2 R 13 or —OR 13 ; —N(R 13 )—(CH 2 ) 1-6 NR 14 R 15 ; —N(R 13 )—(CH 2 ) 1-6 —N ⊕ R 14 R 15 R 16 ; —N(R 13 )—N—R 14 R 15 or —N(R 13 )—N ⊕ R 14 R 15 R 16 , wherein R 12 is in each case hydrogen, a cation, C 1 -C 12 alkyl, or phenyl unsubstituted or substituted by C 1 -C 4 alkyl, C 1 -C 4 alkoxy, halogen, cyano, nitro, carboxyl, sulfo, hydroxyl, amino, N-mono- or N,N-di-C 1 -C 4 alkylamino unsubstituted or substituted by hydroxy in the alkyl moiety, N-phenylamino, N-naphthylamino, where the amino groups may be quaternized, phenyl, phenoxy or by naphthoxy; R 13 is in each case hydrogen, C 1 -C 12 alkyl, or phenyl unsubstituted or substituted as indicated above; and R 14 , R 15 and R 16 are each independently of the other(s) hydrogen, unsubstituted or hydroxyl-substituted C 1 -C 12 alkyl, or phenyl unsubstituted or substituted as indicated above, or R 14 and R 15 together with the nitrogen atom bonding them form a pyrrolidine, piperidine, morpholine or azepane ring which is unsubstituted or substituted by at least one unsubstituted C 1 -C 4 alkyl and/or substituted C 1 -C 4 alkyl; or a radical wherein R 15 and R 16 are as defined above; and R′ 3 and R′ 9 are as defined above for R′ 6 or are hydrogen, C 1 -C 12 alkyl, or phenyl unsubstituted or substituted as indicated above, with the proviso that (i) at least one of the substituents R 3 ′, R 6 ′ and R 9 ′ contains a quaternized nitrogen atom which is not directly bonded to one of the three pyridine rings A, B or C