Patent ID: 7816531

Claim:
A metal complex of the formula (1) containing at least one metal M, coordinated to a polypodal ligand L of the formula (2) where V is a bridging unit, containing 1 to 80 atoms from the third, fourth, fifth and/or sixth main group, which covalently bonds the three part-ligands L1, L2 and L3 to one another, and where the index a is equal to 0 or 1, where, in the case a=0, the bridging unit V is omitted; part-ligand L1 here conforms to the formula (3) where Cy1 and Cy2 are substituted or unsubstituted cyclic groups, each of which contains at least one donor atom or C atom in the ring or bonded exocyclically via which the cyclic group is bonded to the metal; the groups Cy1 and Cy2 are bonded to one another via a covalent bond or a common edge and are optionally linked to one another via substituents and thus form a polycyclic, aliphatic or aromatic ring system; part-ligand L2 is a donor ligand, containing one or more donor atoms and 2 to 40 C atoms, with the proviso that part-ligand L2 is not built up from two rings or part-rings which are both bonded to the metal; part-ligand L3 is identical to or different from part-ligand L1 or part-ligand L2 and the metal complex is electrically neutral.