Metal complexes

A compound of the following applies to the ligand moiety L1 thereof together with the metal and the bridging unit V of the formula (11):

• M is a transition metal, aluminium or gallium;
• Cy1 and Cy2 are, identically or differently on each occurrence, an aryl or heteroaryl group having 5 to 30 aromatic ring atoms, which is optionally substituted by one or more radicals R, or a cyclic saturated or preferably unsaturated carbene;
• one of the two groups Cy1 or Cy2 here is bonded to the metal via a formally negatively charged carbon or via a formally negatively charged exocyclic donor atom, and the other of the two groups Cy1 and Cy2 is bonded via a neutral donor atom which is part of the group Cy or Cy2 and which is selected from nitrogen, and carbon in the form of a carbene;
• V is B, BR−, CR, CO−, CN(R1)2, SiR, N, NO, NR+, P or PO;
• where U stands for N, P, P(═O), CR or SiR, and the dashed bonds each represent the bonds to the ligand moieties;
• Z is, identically or differently on each occurrence, O, S, S(═O), S(═O)2, NR, PR, P(═O)R, C(═O), SiR2 or BR;
• R is on each occurrence, identically or differently, H, D, F, Cl, Br, I, N(R1)2, CN, Si(R1)3, B(OR1)2, C(═O)R1, P(═O)(R1)2, a straight-chain alkyl, alkenyl, alkynyl, or alkoxy group having 1 to 40 C atoms or a branched or cyclic alkyl, alkenyl, alkynyl, or alkoxy group having 3 to 40 C atoms, each of which is optionally substituted by one or more radicals R1, where one or more non-adjacent CH2 groups is optionally replaced by R1C═CR1, C≡C, Si(R1)2, NR1 or O, and where one or more H atoms is optionally replaced by F, or an aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, which optionally in each case be substituted by one or more radicals R1, or an aryloxy or heteroaryloxy group having 5 to 60 aromatic ring atoms, which is optionally substituted by one or more radicals R1, or a diarylamino group, diheteroarylamino group or arylheteroarylamino group having 10 to 40 aromatic ring atoms, which may be substituted by one or more radicals R1, or a combination of these systems;
• two or more substituents R here optionally forms a mono- or polycyclic aliphatic, aromatic and/or benzo-fused ring system with one another;
• R1 is on each occurrence, identically or differently, H, F or an aliphatic, aromatic and/or heteroaromatic hydrocarbon radical having 1 to 20 C atoms, in which, in addition, one or more H atoms is optionally replaced by F;
• two or more substituents R1 here optionally forms a mono- or polycyclic aliphatic or aromatic ring system with one another;
• and
• a is 0 or 1, where, in the case where a=0, the bridging unit V is not present.