Metal complexes of bis (hydroxyquinoline) as bleach catalysts

Washing or detergent containing ligands and / or metal-ligand complexes of ligands of general formula (I) ** ** Formula where x equals NR1, NR1R2 (+), PR1, PR1R2 (+), P (O) R1 , O, S, BR1, BR1R2 (-), CR3R4 or SiR3R4, Y and Z independently of one another, equal to OH, SH, NH2, NHR5 or NR5R6, a, B, C, D, R1, R2, R3 and R4 independently equal from one another hydrogen, alkyl, trifluoromethyl, cycloalkyl, cycloalkylalkyl, alkenyl, alkynyl, heteroalkyl, heterocycloalkyl, alkoxy, alkylsulfanyl, alkylsulfinyl, alkylsulfonyl, alkanoyl, alkanoyloxy, alkoxycarbonyl, alkylaminocarbonyl, alquilsulfanilcarbonilo, hydroxy, amino , aryl, arylalkyl, aryloxy, arylsulfanyl, arylsulfinyl, arylsulfonyl, arylcarbonyl, arylcarbonyloxy, aryloxycarbonyl, arylaminocarbonyl, arilsulfanilcarbonilo, heteroaryl, heteroalkyl, heteroaryloxy, heteroarylamino, heteroarylsulfanyl, heteroarylsulfonyl, heteroarilsulfoxidilo, heteroarylcarbonyl, heteroarilcarboni Loxi, heteroaryloxycarbonyl, heteroarylaminocarbonyl, heteroarilsulfanilcarbonilo, alkoxysulfonyl, alcoxicarbinol, ammonium, hydroxycarbonyl, alkoxycarbonyl, aryloxycarbonyl, amidocarbonyl, halogen, nitro, sulfate, sulfo, amidosulfo, phosphate, phosphono, amidofosfono, formyl, tioformilo, - (CH2-CH2-O- ) nH and - (CH2-CH2-CH2-O-) nH with n> = 1 to 20.R5 and R6 independently of one another, are equal to hydrogen or alkyl groups, wherein all radicals of the molecule thus obtained can be substituted one or more times, so that (N) equals optionally can be substituted one or two CH groups corresponding aryl radical N.