NOVELTY - Metal complex (I) having a sub-structure (II) is new.    USE - (I) is useful as an emitting compound and/or as a matrix material in an electronic device such as organic electroluminescent devices, 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 and organic laser diodes (all claimed).    ADVANTAGE - (I) improves light emitting efficiency, operating voltage and lifetime of the electronic device.    DETAILED DESCRIPTION - Metal complex of formula (M(L)n(L1)m) (I) having a sub-structure of formula (M(L)n) (II) is new.    L = monoanionic ligand of formula (Ia);    M = Cu, Ag, Au, Ru, Zn, Al, Ga or In;    X = CR or N;    Y1 = CR or N, where six membered heteraromatic ring is formed when Y1 is -CR=CR or CR=N;    Z1 = N, O or S, where Z1 is N when Y1 is -CR=CR- or -CR=N-;    A = coordinating group coordinated to M and be substituted by substituents R;    R = H, D, F, Cl, Br, I, N(R1)2, P(R1)2, CN, NO2, OH, COOH, C(=O)N(R1)2, Si(R1)3, B(OR1)2, C(=O)R1, P(=O)(R1)2, S(=O)R1, S(=O)2R1, OSO2R1, straight-chain 1-20C-alkyl, straight-chain 1-20C-alkoxy, straight-chain 1-20C-thioalkoxy, 2-20C-alkenyl, 2-20C-alkynyl, branched or cyclic 3-20C-alkyl, branched or cyclic 3-20C-alkoxy, branched or cyclic 3-20C-thioalkoxy (all optionally substituted by substituents R1 in which non-adjacent CH2 groups are replaced by R1C=CR1, C-C, Si(R1)2, C=O, NR1, O, S or CONR1 and H atoms are replaced by D, F, Cl, Br, I or CN), aromatic or heteroaromatic ring having 5-60 aromatic ring atoms (substituted by R1 radicals), aryloxy or heteroaryloxy having 5-40 aromatic ring atoms (substituted by R1 radicals), aralkyl or heteroaralkyl having 5-40 aromatic ring atoms (substituted by R1 radicals), or diarylamino, diheteroarylamino or arylheteroarylamino with 10-40 aromatic ring atoms (substituted by R1 radicals), where two adjacent radicals R form mono- or polycyclic, aromatic or aliphatic ring;    R1 = H, D, F, Cl, Br, I, N(R2)2, P(R2)2, CN, NO2, Si(R2)3, B(OR2)2, C(=O)R2, P(=O)(R2)2, S(=O)R2, S(=O)2R2, OSO2R2, straight-chain 1-20C-alkyl, straight-chain 1-20C-alkoxy, straight-chain 1-20C-thioalkoxy, 2-20C-alkenyl, 2-20C-alkynyl, branched or cyclic 3-20C-alkyl, branched or cyclic 3-20C-alkoxy, branched or cyclic 3-20C-thioalkoxy (all optionally substituted by substituents R2 in which non-adjacent CH2 groups are replaced by R2C=CR2, C-C, Si(R2)2, C=O, NR2, O, S or CONR2 and H atoms are replaced by D, F, Cl, Br, I or CN), aromatic or heteroaromatic ring having 5-60 aromatic ring atoms (substituted by R2 radicals), aryloxy or heteroaryloxy having 5-40 aromatic ring atoms (substituted by R2 radicals), aralkyl or heteroaralkyl having 5-40 aromatic ring atoms (substituted by R2 radicals), or diarylamino, diheteroarylamino or arylheteroarylamino with 10-40 aromatic ring atoms (substituted by R2 radicals), where two adjacent radicals R form mono- or polycyclic, aromatic or aliphatic ring;    R2 = H, D, F or aliphatic, aromatic and/or heteroaromatic 1-20C-hydrocarbon in which one or more H atoms are replaced by F, where two or more substituents R2 form a mono- or polycyclic, aromatic or aliphatic ring;    L1 = co-ligand or coordinating group when L1 is attached with L;    n = 1, 2 or 3; and    m = 0, 1, 2, 3 or 4, where substituents R or R1 in the ligands L binding to the metal M form a tri-or tetradentate ligands and the ligand L is a ligand L1 to be linked via bridging units V to form a linear tri-or tetradentate ligand.    An INDEPENDENT CLAIM is included for preparing (I).