Metal complexes and dishwashing detergents containing them

A dishwashing detergent comprising a metal complex of the general formula (III),

• (Aq+)p[Mn+Lm−](Xo−), (III)
• in which q represents 1 or 2 and A+ represents a cation selected from alkali metal cations where q=1, ½ alkaline earth cations where q=2 and ammonium ions where q=1, Mn+ represents an aluminum ion, a transition metal ion or a lanthanoid metal ion, L represents a ligand of the formula (I)
• in which each E independently represents O or NR1, with the proviso that at least 1 E is not O, each R1 independently represents H, unsubstituted or substituted, linear or branched C1-22 alkyl, unsubstituted or substituted, linear or branched C1-22 heteroalkyl, unsubstituted or substituted aryl, unsubstituted or substituted heteroaryl, unsubstituted or substituted, linear or branched C2-20 alkenyl, unsubstituted or substituted, linear or branched C2-20 alkynyl, unsubstituted or substituted, linear or branched C2-20 heteroalkenyl, unsubstituted or substituted, linear or branched alkylaryl, or unsubstituted or substituted, linear or branched alkylheteroaryl, with the proviso that at least 1 R1 represents a substituted C1-22 alkyl of the general formula (IIa) or (IIc), or with the proviso that at least 1 R1 represents a substituted C1-22 alkyl of the general formula (IIIa) or (IIIc),
• in which Q represents O or CH2, w represents a number from 1 to 22, q represents 1 or 2 and A+ represents a cation selected from alkali metal cations where q=1, ½ alkaline earth cations where q=2 and ammonium ions where q=1, Xo− represents an anion selected from F−, Cl−, Br−, I−, OH−, HSO3−, SO32−, SO42−, HSO4−, NO2−, NO3−, PO43−, HPO42−, H2PO4−, BF4−, PF6−, ClO4−, acetate, citrate, formate, glutarate, lactate, malate, malonate, oxalate, pyruvate, tartrate, methanesulfonate, methyl sulfate, p-toluenesulfate and succinate, n is a number from 1 to 5, m is a number from 0 to 4 and o is a number from 1 to 3 and p and r independently of one another represent a number from 0 and 7, with the proviso that the sum of n and the product of p and q is equal to the sum of m and the product of r and o;
• wherein the detergent comprises 0.001 wt. % to 10 wt. % of the metal complex of the formula (III).

A metal complex of the general formula (III),

• (Aq+)p[Mn+Lm−](Xo−), (III)
• in which q represents 1 or 2 and A+ represents a cation selected from alkali metal cations where q=1, ½ alkaline earth cations where q=2 and ammonium ions where q=1, Mn+ represents an aluminum ion, a transition metal ion or a lanthanoid metal ion, L represents a ligand of the formula (I)
• in which each E independently represents O or NR1, with the proviso that at least 1 E is not O, each R1 independently represents H, unsubstituted or substituted, linear or branched C1-22 alkyl, unsubstituted or substituted, linear or branched C1-22 heteroalkyl, unsubstituted or substituted aryl, unsubstituted or substituted heteroaryl, unsubstituted or substituted, linear or branched C2-20 alkenyl, unsubstituted or substituted, linear or branched C2-20 alkynyl, unsubstituted or substituted, linear or branched C2-20 heteroalkenyl, unsubstituted or substituted, linear or branched alkylaryl, or unsubstituted or substituted, linear or branched alkylheteroaryl, with the proviso that at least 1 R1 represents a substituted C1-22 alkyl of the general formula (IIa) or (IIc), or with the proviso that at least 1 R1 represents a substituted C1-22 alkyl of the general formula (IIIa) or (IIIc),
• in which Q represents O or CH2, w represents a number from 1 to 22, q represents 1 or 2 and A+ represents a cation selected from alkali metal cations where q=1, ½ alkaline earth cations where q=2 and ammonium ions where q=1, Xo− represents an anion selected from F−, Cl−, Br−, I−, OH−, HSO3−, SO32−, SO42−, HSO4−, NO2−, NO3−, PO43−, HPO42−, H2PO4−, BF4−, PF6−, ClO4−, acetate, citrate, formate, glutarate, lactate, malate, malonate, oxalate, pyruvate, tartrate, methanesulfonate, methyl sulfate, p-toluenesulfate and succinate, n is a number from 1 to 5, m is a number from 0 to 4 and o is a number from 1 to 3 and p and r independently of one another represent a number from 0 and 7, with the proviso that the sum of n and the product of p and q is equal to the sum of m and the product of r and o;
• wherein in the general formula (I) the groups R1 which do not correspond to the general formula (IIa) or (IIc) are selected from the group consisting of