NOVELTY - Metal complex (I) is new.    USE - (I) is useful: in an electronic device comprising organic LED, polymer LED, 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-quenching devices, light-emitting electrochemical cells and organic laser diodes; as emitting compound in one or more emitting layers, preferably in combination with a matrix material comprising ketones, phosphine oxides, sulfoxides, sulfones, triarylamine, carbazole derivatives, indolocarbazole derivatives, indenocarbazole derivatives, azacarbazole derivatives, bipolar matrix materials, silanes, azaborols, boronic esters, triazine derivatives, zinc complexes, diaza- or tetraazasilol derivatives and/or diazaphosphol derivatives; and for therapy, prophylaxis and/or diagnosis of diseases and/or cosmetic conditions (all claimed), where the diseases are e.g. psoriasis, skin aging, skin wrinkles, skin rejuvenation, enlarged pores, cellulite, folliculitis, actinic keratosis, skin ulcer, acne, acne rosacea, scars by acne, jaundice, newborn jaundice, vitiligo, skin cancer, Crigler Najjar syndrome, dermatitis, atopic dermatitis, diabetic skin ulcers, desensitization of the skin, inflammatory diseases, rheumatoid arthritis, pain, wounds, neurological diseases, edema, Paget's disease, ocular neovascular diseases, viral infections (preferably infections caused by herpes simplex or human papilloma virus), warts, genital warts, winter depression and sleeping sickness. No biological data given.    ADVANTAGE - (I) has improved solubility and stability, and provides organic electroluminescent device with improved durability, efficiency and operating voltage.    DETAILED DESCRIPTION - Metal complex of formula (M(L)n(L1)m) (I), in which M(L)n has a structure of formula (II), is new.    M = metal comprising iridium, rhodium, platinum or palladium, where M is any bidentate ligand L that binds on X and a carbon atom;    X = CR1 or N;    Y1 = 5-60 membered aliphatic or (hetero)aromatic hydrocarbyl (optionally substituted with one or more R3), a single bond or bivalent group comprising C(R1)2, C(=O), O, S, SO, SO2, NR1, PR1 or P(=O)R1; either    R1 = 5-60 membered (hetero)aromatic ring system or 5-60 membered (hetero)aryloxy, or 10-40 membered di(hetero)arylamino group, or -arylheteroarylamino group (all optionally substituted by one or more R2), or linear 1-40C-alkyl or -(thio)alkoxy, linear 2-40C-alkenyl or -alkynyl, branched or cyclic 3-40C-alkyl, -alkenyl, -alkynyl or -(thio)alkoxy (all optionally substituted with one or more R2, and where one or more non-adjacent CH2-groups are optionally replaced by -CC-, -R2C=CR2-, 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 one or more H atoms are optionally replaced by D, F, Cl, Br, I, CN or NO2) or H, D, F, Cl, Br, I, N(R2)2, CN, NO2, Si(R2)3, B(OR2)2, C(=O)R2, P(=O)(R2)2, S(=O)R2, S(=O)2R2 or OSO2R2; or    two or more R1 together = mono- or polycyclic, aliphatic, aromatic and/or benzofused ring system; either    R2 = 5-60 membered (hetero)aromatic ring system or 5-60 membered (hetero)aryloxy, and/or 10-40 membered di(hetero)arylamino group, or -arylheteroarylamino group (all optionally substituted by one or more R3), linear 1-40C-alkyl or -(thio)alkoxy, linear 2-40C-alkenyl or -alkynyl, branched or cyclic 3-40C-alkyl, -alkenyl, -alkynyl or -(thio)alkoxy (all optionally substituted with one or more R3, and where one or more non-adjacent CH2-groups are optionally replaced by -CC-, -R3C=CR3-, 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 one or more H atoms are optionally replaced by D, F, Cl, Br, I, CN or NO2), H, D, F, Cl, Br, I, N(R3)2, CN, NO2, Si(R3)3, B(OR3)2, C(=O)R3, P(=O)(R3)2, S(=O)R3, S(=O)2R3 or OSO2R3; or    two or more R2 = mono- or polycyclic, aliphatic, aromatic ring system; either    R3 = H, D, F or 1-20C-aliphatic or (hetero)aromatic hydrocarbyl, in which one or more H atoms are optionally replaced by F; or    two or more R3 together = mono- or polycyclic, aliphatic or aromatic ring system;    L1 = any co-ligand;    W1 = fused (hetero)aryl group of formula (III);    ring A = 5-60 membered aliphatic or (hetero)aromatic ring or polycyclic ring system (both optionally substituted), where the ring A is optionally fused in adjacent rings;    U1 = -C(R1)2, -Si(R1)2, N, -NR1, -O, -S, -C(=O), -S(=O), -SO2, -CF2, -SF4, -P, -P(=O)R1, -PF2, -P(=S)R1, -As, -As(=O), -As(=S), -Sb, -Sb(=O) or -Sb(=S);    q, r = 0 or 1;    p = greater than or equal to 1;    t = 0-2;    n = 1-3 (where M is iridium or rhodium) or 1 or 2 (where M is platinum or palladium); and    m = 0-4, where n and m are selected so that the coordination number of the metal M of iridium or rhodium is 6, and the coordination number of the metal M of platinum or palladium is 4, and optionally one or more L and L be linked together or L with L1 is bonded over a bridge Z and stretched as a tridentate, tetradentate, pentadentate or hexadentate ligand system.    An INDEPENDENT CLAIM is included for the preparation of (I).