Patent ID: 8455112

Claim:
An organometallic complex of the general formula (I) M[L 1 ] q [L 2 ] r [L 3 ] s (I) in which M is a metal atom selected from the group consisting of Ir, Co, Rh, Ni, Pd, Pt, Fe, Ru, Os, Cr, Mo, W, Mn, Tc, Re, and Au; L 1 is a monoanionic bidentate ligand based on a compound of the formula (IIa) in which: R 1 is a radical of the formula where Q is in each case independently CR a or N, where at least one Q group in an ortho-position to the bonding site is N and R a is hydrogen; or a radical of the formulae where Q is in each case independently CR a or N, where at least one Q group in an ortho-position to the bonding site is N, and Q′ is CR a 2 , O, S or NR c and R b and R c are each independently hydrogen, alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, amino, CF 3 , CN, alkoxy or F; wherein R 1 may optionally bear a fused group; R 2 , R 3 , and R 4 are each independently substituted or unsubstituted C 1 -C 20 -alkyl, substituted or unsubstituted C 0 -C 20 -alkylene-C 3 -C 18 -cycloalkyl, substituted or unsubstituted C 0 -C 20 -alkyleneheterocycloalkyl having 3-18 ring atoms, substituted or unsubstituted C 0 -C 20 -alkylene-C 1 -C 20 -alkoxy, substituted or unsubstituted C 0 -C 20 -alkylene-C 6 -C 18 -aryloxy, substituted or unsubstituted C 0 -C 20 -alkylene-C 6 -C 18 -aryl, or substituted or unsubstituted C 0 -C 20 -alkyleneheteroaryl having 5 to 18 ring atoms, wherein the substituent is C 1 -C 8 -alkyl, C 1 -C 8 alkoxy, halogen, or pseudohalogen; o is from 0 to 3, where the R 3 radicals, when o>1, may be the same or different; p is from 0 to 2, where the R 4 radicals, when p>1, may be the same or different; n is 0; X 2 is N, CH or CR 2 ; X 3 is N, CH or CR 3 ; X 4 are each independently N, CH or CR 4 ; L 2 is a mono- or dianionic ligand which may be mono- or bidentate; L 3 is an uncharged mono- or bidentate ligand; q is the number of ligands L 1 , where q is 1, 2 or 3 and the ligands L 1 , when q>1, may be the same or different; r is the number of ligands L 2 , where r is from 0 to 4 and the ligands L 2 , when r>1, may be the same or different; s is the number of ligands L 3 , where s is from 0 to 4 and the ligands L 3 , when s>1, may be the same or different; and the sum of q+r+s depends on the oxidation state and coordination number of the metal used and on the denticity of the ligands L 1 , L 2 and L 3 and also on the charge of the ligands L 1 and L 2 .