Washing or cleaning agent with optionally generated in situ bleichverstärkendem transition metal complex

The cleaning performance of detergents and cleaning agents especially against bleachable stains should be strengthened, without causing the application to damage to the so treated fabric. This was accomplished essentially by the use of a bleaching catalyst in the form of a complex of Fe, Mo, Mn and / or W with a ligand with a structure of the formula (I), ,