NOVELTY - Metal complexes (I) are new.    USE - (I) are useful as emitting compound in one or more emitting layers of an electronic device, preferably organic electroluminescent devices, integrated circuits, organic field-effect transistors, organic thin-film transistors, organic light-emitting transistors, organic solar cells, organic optical detectors, organic photoreceptors, organic field-quench devices, light-emitting electrochemical cells or organic laser diodes.    ADVANTAGE - (I) provides blue and green phosphorescent organic LED with high thermal stability, high efficiency, high service life and low operating voltage.    DETAILED DESCRIPTION - Metal complexes of formula (I) are new.    L1=a part of ligand of formula (II);    M=Pt, Ir or Au;    V1=NR7, N -, BR7, B(R7) 2-, O, S or Se;    X=C or N, where all X in (II) together form a 14-pi electron system, provided that at least two groups X and at most six groups X in each part of (II) are N; either    R1-R6=linear 1-40C-alkyl, linear 1-40C-alkoxy, linear 1-40C-thioalkoxy, 2-40C-alkenyl, 2-40C-alkynyl, branched or cyclic 3-40C-alkyl, 3-40C-alkoxy, 3-40C-thioalkoxy (where one or more nonadjacent CH 2are replaced by R8C=CR8, CC, Si(R8) 2, C=O, C=S, C=NR8, P(O)(R8), SO, SO 2, NR8, O, S or CONR8 and one or more H are replaced by D, F, Cl, Br, I or CN), 5-60 membered (hetero)aryl ring system, 5-60 membered (hetero)aryloxy, 5-60 membered (hetero)aralkyl, 10-40 membered di(hertero)arylamino or 10-40 membered arylheteroarylamino (all optionally substituted by R8), H, D, F, Cl, Br, I, N(R8) 2, CN, NO 2, Si(R8) 3, B(OR8) 2, C(O)R8, P(O)(R8) 2, S(O)R8, SO 2R8 or OSO 2R8, provided that R1-R6 represents a free electron pair, if the group X, to which R1-R6 is bonded, is N with unsaturated valency;    R7=linear 1-40C-alkyl, linear 1-40C-alkoxy, 2-40C-alkenyl, 2-40C-alkynyl, branched or cyclic 3-40C-alkyl, 3-40C-alkoxy (where one or more nonadjacent CH 2are replaced by R8C=CR8, CC, Si(R8) 2, C=O, C=S, C=NR8, P(O)(R8), SO, SO 2, NR8, O, S or CONR8 and one or more H are replaced by D, F, Cl, Br, I or CN), 5-60 membered (hetero)aryl ring system, 5-60 membered (hetero)aryloxy or 5-60 membered (hetero)aralkyl (all optionally substituted by R8), H, D, Si(R8) 3or C(=O)R8; or    R4R5, R5R6, R1R7=mono or polycyclic, aliphatic, aromatic and/or benzoannelated ring system; or    R2R3=mono or polycyclic aliphatic ring system; or    R1R7=mono or polycyclic, aliphatic, aryl and/or benzoannelated ring system; either    R8=linear 1-40C-alkyl, linear 1-40C-alkoxy, linear 1-40C-thioalkoxy, 2-40C-alkenyl, 2-40C-alkynyl, branched or cyclic 3-40C-alkyl, 3-40C-alkoxy, 3-40C-thioalkoxy (where one or more nonadjacent CH 2is optionally replaced by R9C=CR9, CC, Si(R9) 2, C=O, C=S, C=NR9, P(O)(R9), SO, SO 2, NR9, O, S or CONR9 and one or more H are replaced by D, F, Cl, Br, I or CN), 5-60 membered (hetero)aryl, 5-60 membered (hetero)aryloxy or 5-60 membered (hetero)aralkyl, 10-40 membered diarylamino, 10-40 membered diheteroarylamino or 10-40 membered arylheteroarylamino (all optionally substituted by R9), H, D, F, Cl, Br, I, N(R9) 2, CN, NO 2, Si(R9) 3, B(OR9) 2, C(O)R9, P(O)(R9) 2, S(O)R9, SO 2R9 or OSO 2R9; or    2R8=mono- or poly-cyclic, aliphatic or aryl ring system; either    R9=H, D, F, or aliphatic or (hetero)aryl 1-20C-hydrocarbyl (in which one or more H atoms are replaced by F); or    2R9=mono-or polycyclic, aliphatic or aryl ring system;    L2=a bidentate-ligand;    n=1 or 2; and    m=(2-n).    INDEPENDENT CLAIMS are included for:    (1) preparation of (I);    (2) a formulation, preferably a solution, suspension or miniemulsion comprising (I) and at least one solvent; and    (3) an electronic device, preferably organic electroluminescent devices, integrated circuits, organic field-effect transistors, organic thin-film transistors, organic light-emitting transistors, organic solar cells, organic optical detectors, organic photoreceptors, organic field-quench devices, light-emitting electrochemical cells or organic laser diodes, comprising (I).