NOVELTY - Metal complex compound (I), is new.    USE - (I) is useful as emitting compound in at least one emitting layer in electronic devices, preferably organic electroluminescent devices (organic light emitting diodes or polymer light-emitting diodes), organic 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 (all claimed).    ADVANTAGE - (I) exhibits high solubility and thus enhances the efficiency and the service life of organic electroluminescent devices.    DETAILED DESCRIPTION - Metal complex compound of formula (M(L)n(L1)m) (I), is new.    either M(L)n = heterocyclic moiety of formula (II) or (III), where more ligands L are linked with each other or L is linked with L1 by link Z and thus a tridentate, tetradentate, pentadentate or hexadentate ligand is obtained; or    M = metal comprising Ir, Rh, Pt or Pd;    X, X1 = CR1 or N;    Q = R1C=CR1, R1C=N, O, S, Se or NR1;    V1 = O, S, Se or NR1;    Y1 = single bond or bivalent group comprising C(R1)2, C(=O), O, S, SO, SO2, NR1, PR1 or P(=O)R1;    R = 1-40C alkyl, 1-40C alkoxy or 1-40C thioalkoxy (all are present as straight chain), 2-40C alkenyl or 2-40C alkynyl (both are present as straight chain), 3-40C alkyl, 3-40C alkenyl, 3-40C alkynyl, 3-40C alkoxy or 3-40C thioalkoxy (all are optionally cyclic and optionally substituted by at least one group R1), where at least one non adjacent CH2 group is optionally replaced by G, and at least one H is optionally replaced by T, or aromatic or heteroaromatic ring with 5-60 aromatic ring atoms (optionally substituted by at least one group R1), aryloxy or heteroaryloxy with 5-60 aromatic ring atoms (optionally substituted by at least one group R1) or diarylamino, diheteroarylamino or arylheteroarylamino with 10-40 aromatic ring atoms (optionally substituted by at least one group R1);    R1 = 1-40C alkyl, 1-40C alkoxy or 1-40C thioalkoxy (all are present as straight chain), 2-40C alkenyl or 2-40C alkynyl (both are present as straight chain), 3-40C alkyl, 3-40C alkenyl, 3-40C alkynyl, 3-40C alkoxy or 3-40C thioalkoxy (all are optionally cyclic and optionally substituted by at least one group R2), where at least one non adjacent CH2 group is optionally replaced by G, and at least one H is optionally replaced by T, or H, D, halo, N(R2)2, CN, NO2, Si(R2)3, B(O(R)2)2, C(=O)R2, P(=O)(R2)2, S(=O)(R)2, S(=O)2R2, OSO2R2, aromatic or heteroaromatic ring with 5-60 aromatic ring atoms (optionally substituted by at least one group R2), aryloxy or heteroaryloxy with 5-60 aromatic ring atoms (optionally substituted by at least one group R2), diarylamino, diheteroarylamino, arylheteroarylamino with 10-40 aromatic ring atoms (optionally substituted by at least one group R2), or combination of at least two of these groups;    either R2 = 1-40C alkyl, 1-40C alkoxy or 1-40C thioalkoxy (all are present as straight chain), 2-40C alkenyl or 2-40C alkynyl (both are present as straight chain), 3-40C alkyl, 3-40C alkenyl, 3-40C alkynyl, 3-40C alkoxy or 3-40C thioalkoxy (all are optionally cyclic and optionally substituted by at least one group R3), where at least one non adjacent CH2 group is optionally replaced by R3C=CR3, CC, Si(R3)2, Ge(R3)2, Sn(R3)2, C=O, C=S, C=Se, C=NR3, P(=O)(R3), SO, SO2, NR3, O, S or CONR3, and at least one H is optionally replaced by T, or H, D, halo, N(R3)2, CN, NO2, Si(R3)3, B(OR3)2, C(=O)R3, P(=O)(R3)2, S(=O)R3, S(=O)2R3, OSO2R3, aromatic or heteroaromatic ring with 5-60 aromatic ring atoms (optionally substituted by at least one group R3), aryloxy or heteroaryloxy with 5-60 aromatic ring atoms (optionally substituted by at least one group R3), diarylamino, diheteroarylamino, arylheteroarylamino with 10-40 aromatic ring atoms (optionally substituted by at least one group R3), or combination of at least two of these groups; or    at least two adjacent R2 = mono- or polycyclic, aliphatic or aromatic ring system;    either R3 = H, D, F or aliphatic, aromatic and/or heteroaromatic 1-20C hydrocarbon, where at least one H is optionally replaced by F; or    at least two R3 = mono- or polycyclic, aliphatic or aromatic ring system;    R4 = H or D;    L1 = co-ligand;    either n = 1-3 (when M = Ir or Rh); or    n = 1 or 2 (when M = Pt or Pd);    m = 0-4;    G = R2C=CR2, CC, Si(R2)2, Ge(R2)2, Sn(R2)2, C=O, C=S, C=Se, C=NR2, P(=O)(R2), SO, SO2, NR2, O, S or CONR2; and    T = D, halo, CN or NO2.    INDEPENDENT CLAIMS are also included for:    (1) the preparation of (I);    (2) an electronic device, preferably organic electroluminescent devices (organic light emitting diodes or polymer light-emitting diodes), organic 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; and    (3) a solution or formulation comprising at least one compound (I) and at least one solvent.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic representation of the organic electroluminescent devices (Drawing includes non-English language text).