Composition comprising macrocyclic tetra-amido metal complex as bleaching catalyst

A bleaching composition comprising:

• a) an alkyl benzene sulphonate surfactant, and
• b) a macrocyclic tetra amido N-donor metal ligand complex, having the structure as shown below:
• wherein:
• B1, B3 and B4 each represent a bridging group having zero, one two or three carbon containing nodes for substitution, and B2 represents a bridging group having at least one carbon containing node for substitution, each said node containing a C(R), C(R1)(R2) or C(R)2,
• each R substituent is the same or different from the remaining R substituents, and
• (1) is selected from the group consisting of alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, alkynyl, alkylaryl, halogen, alkoxy, phenoxy and combinations thereof, or
• (2) form a substituted or unsubstituted benzene ring of which two carbons on the ring form nodes in the B-unit;
• M is a transition metal ion;
• L is an axial ligand;
• and,
• Q is an alkali metal or tetra-alkyl ammonium or tetra-phenyl phosphonium counter-ion and,
• said composition being devoid of any added peroxygen bleach or a peroxy based or peroxyl-generating bleach system.