NOVELTY - Metal complexes (I) are new.    USE - (I) are useful in an electronic device, preferably in organic electroluminescent devices or polymer 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 or organic laser diodes. (I) are useful as an emitting compound in an emitting layer or as a charge transport compound in a charge transport or charge injection layer (all claimed).    ADVANTAGE - (I) exhibit electroluminescence at blue, red and green region of the electromagnetic spectrum. (I) provide electronic device with excellent durability, high operational life, high thermal stability, high efficiency and steep current-voltage curves with a low threshold voltage.    DETAILED DESCRIPTION - Metal complexes of formula (I) are new.    M = metal or a metal ion;    L = neutral, cationic or anionic ligand;    X = C or N;    Z = N or P;    Cy = 4-60 membered mono- or polycyclic non-aromatic ring, or 5-60 membered mono- or polycyclic (hetero)aryl group (both optionally substituted with one or more groups R1), with the proviso that the atoms marked with X are components of the cyclic group Cy;    Ar1 = 5-60 membered mono- or polycyclic (hetero)aryl (optionally substituted with one or more groups R1) with the proviso that the carbon atoms which bind to X and Z are the elements of Ar1; either    R1 = linear 1-40C alkyl, 1-40C alkoxy, thio-1-40C alkyl, branched or cyclic 3-40C alkyl, 3-40C alkoxy, thio-3-40C alkoxy (all optionally substituted with one or more groups R3, one or more adjacent CH2 groups are replaced by R5C=CR5, C?=C, Si(R5)2, Ge(R5)2, Sn(R5)2, C=O, C=S, C=Se, C=NR5, P(=O)(R5), SO, SO2, NR5, O, S or CONR5, and one or more hydrogen atoms are replaced by D, F, Cl, Br, I, CN or NO2), mono- or polycyclic (hetero)aryl with 5-60 aromatic ring atoms (optionally substituted by one or more groups R4, and when two adjacent R1 forms (hetero)aryl, the two ring systems can be linked by a single bond or a bivalent G unit), (hetero)aryloxy with 5-60 ring atoms (optionally substituted by one or more R4 group), H, D, F, Cl, Br, I, CN or NO2, where one of R1 may be linked to a L, so that a five- or hexadentate ligand is formed, or one of R1 associated with L and an opposite R1 or R2 can be linked to form a five- or hexadentate ligand in the form of a cage; or    R1R1 = O, =NH or =NR5; or    R1R1 + atoms to which they bind = 5- or 6-membered aliphatic or aromatic ring (optionally substituted with one or more R4 group), in which one or more of the ring -CH2- groups may be replaced by O, S or NR2;    R2 = linear 1-40C alkyl, 1-40C alkoxy, thio-1-40C alkyl, branched or cyclic 3-40C alkyl, 3-40C alkoxy, thio-3-40C alkoxy (all optionally substituted with one or more R3 group, one or more adjacent CH2 groups are replaced by R5C=CR5, C?=C, Si(R5)2, Ge(R5)2, Sn(R5)2, C=O, C=S, C=Se, C=NR5, P(=O)(R5), SO, SO2, NR5, O, S or CONR5, and one or more hydrogen atoms are replaced by D, F, Cl, Br, I, CN or NO2), mono- or polycyclic (hetero)aryl with 5-60 ring atoms (optionally substituted by one or more R4 groups), aryloxy or heteroaryloxy with 5-60 aromatic ring atoms (optionally substituted by one or more groups R4), non-binding electron pair, H or D, when Z is N, R2 is O, thus forming an amine oxide;    R3 = mono- or polycyclic (hetero)aryl having 5-30 ring atoms in which one or more H atoms are replaced by D, F, Cl, Br, I, CN or NO2, when two adjacent R3 form (hetero)aryl, the two ring systems linked via a single bond or a bivalent G unit; either    R4 = linear 1-20C alkyl or branched or cyclic 3-20C alkyl; or    R4R4 + atoms to which they bind = 5-8 membered aliphatic ring, where one or more of the ring -CH2- groups may be replaced by O, S or NR2;    R5 = H, D, linear 1-20C alkyl or 3-20C branched or cyclic alkyl (where one or more H atoms are optionally replaced by D, F, Cl, Br, I, CN or NO2), mono- or polycyclic (hetero)aryl with 5-30 ring atoms (where one or more H atoms are optionally replaced by D, F, Cl, Br, I, CN or NO2), when two adjacent R5 form (hetero)aryl, the two ring systems can be linked;    R5R5 + atoms to which they bind = 5-8 membered aliphatic ring, where one or more of the ring-CH2-groups may be replaced by O, S or NH;    G = divalent unit comprising C(R5)2, C(R5)2-C(R5)2, C=O, NR5, PR5, O or S;    n, s = 0 or 1, when s is 0, Z is bonded to another R2 and linked to the corresponding X or R1;    m = charge of the complex, preferably -4 to +4;    A = counter ion;    q = charge of A, preferably -4 to +4; and    p = 0-4.    INDEPENDENT CLAIMS are included for:    (1) an oligomer, dendrimer or polymer containing (I), where one or more bonds of (I) are present in the polymer, oligomer or dendrimer;    (2) a macrocyclic compound of formula (IA); and    (3) a formulation comprising (I) and at least one solvent.    E = CH or N.