NOVELTY - Metal complexes (I) are new.    USE - (I) are useful as emitting compound in emitting layer and charge transport compound in charge transport layer and/or charge injection layer in an electronic device, preferably organic LED, organic integrated circuit, organic field-effect transistor, organic thin-film transistor, organic light-emitting transistor, organic solar cell, organic optical detector, organic photoreceptor, organic field quench devices, light emitting electrochemical cells and organic laser diode (all claimed).    ADVANTAGE - (I): exhibit high thermal stability; and provides electronic device with deep blue, efficient red or green emission color and high operational life.    DETAILED DESCRIPTION - Metal complexes of formula (I) are new.    M = a metal;    Cy = (hetero)aryl with 5-60 ring atoms, which is substituted by R1C, provided that X is a part of the group Cy;    E = C(R1B)2, -CR1B=CR1B-, 1,2-, 1,3- or 1,4-phenylene optionally substituted with R1B, C=O, C=S, C=C(R1B)2, C=NR1B, O, S, Se, PR1B or P(R1B)=O;    G = neutral, cationic or anionic ligand, which is optionally bonded to Cy, E, Y1, L, Q1 or Q2;    Q1, Q2 = C(R1B)2, -(R1B)C=C(R1B)-, a phenylene, (hetero)arylene-group with 5-60 ring atoms (optionally substituted by R1B), C=O, C=S, C=C(R1B)2, C=NR1B, O, S, Se, PR1B or P(R1B)=O, where Q1 is optionally coupled with Q2;    X = C, N, P, O or S, where the groups Y1 or E binding at X is C or N, and at least one of both groups binding at the metal M bonded to X is C;    Y1 = C(R1B)2, C=O, C=S, C=C(R1B)2, C=NR1B, NR1B, O, S, Se, PR1B or P(R1B)=O, where substituents R1B at Y1 optionally forms an aliphatic or (hetero)aryl annelated ring with adjacent ring Cy;    L = C, N, P, O, S or Se;    A = a counter ion;    e = 0-4, when e is 0 free bonding place at X is substituent with saturated R1C, and where the sum of e, q1 and q2 is greater than or equal to 1;    g = 0 or 1;    q1, q2 = 0-4, where the substituents Q1 and/or Q2 optionally appear only when there is a free bonding place at L, and when q1 and/or q2 are 0, the free bonding place at L is substituted by saturated R1B;    y = 1 or 2;    a = 0-4, where s and a is selected according to the existing charge r and p of the complex in such a way that altogether forms a neutral charge compound and when r is 0, then a is 0 and there is no counter ion A;    p, r = -4 to 4;    s = 1-4;    R1B, R1C = 1-40C-alkyl, 1-40C-alkoxy, 1-40C-thioalkyl, cyclic 3-40C-alkyl, 3-40C-alkoxy, 3-40C-thioalkyl, 2-40C-alkenyl, 2-40C-alkynyl (all optionally substituted by R1 and where non-adjacent CH2 groups are optionally replaced by R1C=CR1, C?=C, Si(R1)2, Ge(R1)2, Sn(R1)2, C=O, C=S, C=Se, C=NR1, P(=O)(R1), SO, SO2, NR1, O, S or CONR1 and H atoms are replaced by D, F, Cl, Br, I, CN or NO2), a mono- or polycyclic (hetero)aryl ring with 5-60 aryl ring atoms (optionally substituted by non-aryl R1), or (hetero)aryloxy group with 5-60 aryl ring atoms (optionally substituted by non- aryl R1), H, D, F, Cl, Br, I, CHO, N(R1)2, C(=O)R1, P(=O)(R1)2, S(=O)R1, S(=O)2R1, CR1=C(R1)2, CN, NO2, Si(R1)3, B(OR1)2, OSO2R1 or OH, where: two or more R1B and/or R1C are optionally connected and forms a aliphatic or aryl, mono- or polycyclic ring system, in addition R1B is bonded at Cy and in addition R1C is boned to E or Y1;    R1 = 1-40C-alkyl, 1-40C-alkoxy, 1-40C-thioalkyl, cyclic 3-40C-alkyl, 3-40C-alkoxy, 3-40C-thioalkyl, 2-40C-alkenyl, 2-40C-alkynyl (optionally substituted by R2, where non-adjacent CH2 are optionally replaced by R2C=CR2, C?=C, 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 H are replaced by D, F, Cl, Br, I, CN or NO2), H, D, F, Cl, Br, I, CHO, N(R2)2, C(=O)R2, P(=O)(R2)2, S(O)R2, S(=O)2R2, CR2=C(R2)2, CN, NO2, Si(R2)3, B(OR2)2, OSO2R2, OH, a mono- or polycyclic, (hetero)aryl ring system with 5-60 aryl ring atoms (optionally substituted by R2), and/or (hetero)aryloxy with 5-60 aryl ring atoms (optionally substituted by non-aryl R2), where two or more R1 are optionally connected and forms mono- or polycyclic-, aliphatic- or aryl ring system; and    R2 = H, D, F, aliphatic or (hetero)aryl 1-20C-organic residue (in which H atoms are optionally replaced by F), where two or more R2 together forms a mono- or polycyclic, aliphatic or aryl ring system.    Where (I) exclude platinum complexes of formulae (Ib)-(Ig), and iron complex of formula (Ij). INDEPENDENT CLAIMS are included for:    (1) an oligomer, polymer or dendrimer comprising (I), where in (I) at least a bond to the adjacent monomer unit is present and this bond forms a bond to R1B or R1C;    (2) a formulation comprising (I) and at least a solvent;    (3) a (hetero)aryl compound of formula (II); and    (4) the preparation of (I).