Patent ID: 8383828

Claim:
A heteroleptic carbene complex of the general formula (I) M 1 [carbene] n [het]m (I) comprising both carbene ligands and heterocyclic noncarbene ligands, in which the symbols are each defined as follows: M 1 is a metal atom selected from the group consisting of Ir(III), Os(II), or Rh(III); n is the number of carbene ligands, where n is 2, where the carbene ligands may be the same or different; m is the number of heterocyclic noncarbene ligands, where is 1; where carbene is a carbene ligand of the general formula (II) where the symbols in the carbine ligand of the general formula II are each defined as follows: Do 1 is N r is 1; p is 0; q is 0; Y 1 and Y 2 together form a bridge between the donor atom Do l and the nitrogen atom N, said bridge having two carbon atoms, R 1 and R 2 together form a bridge having a total of from four carbon atoms, so that the group forms a six-membered ring which, in addition to the double bond already present has two further double bonds, and may optionally be substituted by alkyl or aryl groups and/or groups with donor or acceptor action; Y 3 is hydrogen, an alkyl, alkynyl or alkenyl radical, or where Do 2 , q′, s′ R 3 ′, R 1 ′, R 2 ′, X′ and p′ are each independently as defined for Do 2 , q, s, R 3 , R 1 , R 2 , X and p, and het is a heterocyclic noncarbene ligand of the general formula (III) in which the symbols in the ligand het of the general formula III are each defined as follows: D are each independently CR 34 or N; W is C, N, or P; E are each independently CR 35 , N, NR 36 , S, O, P or PR 37 ; I is 1 or 2; R 34 , R 35 , R 37 are each independently H, an alkyl, aryl, heteroaryl, alkynyl or alkenyl radical, R 36 is H, an alkyl, heteroaryl, alkynyl, or alkenyl radical or an aryl radical with a base structure selected from phenyl, naphthyl, anthracenyl and phenanthrenyl which base structure is unsubstituted, or in each case 2 R 34 , R 35 , R 36 or R 37 radicals together form a fused ring which may optionally comprise at least one heteroatom, or R 34 , R 35 , R 36 or R 37 is a radical having donor or acceptor action; where the dotted line means an optional bridge between one of the D groups and one of the E groups; where the bridge may be defined as follows: alkylene, arylene, heteroarylene, alkynylene, alkenylene, NR 38 , PR 39 , BR 40 , O, S, SO, SO 2 , SiR 41 R 42 , CO, CO—O, O—CO and (CR 43 R 44 ) v, where one or more nonadjacent (CR 43 R 44 ) groups may be replaced by NR 38 , PR 39 , BR 40 , O, S, SO, SO 2 , SiR 41 R 42 , CO, CO—O, or O—CO, where v is from 2 to 10; and R 38 , R 39 , R 40 , R 41 , R 42 R43 R 44 are each H, alkyl, aryl, heteroaryl, alkenyl, or alkynyl.