NOVELTY - Iridium complexes (I) are new. (I) has a partial structure, which is an iridium complex (II).    USE - (I) are useful in an electronic device, for generation of singlet oxygen in the photocatalysis or in oxygen sensors (claimed).    ADVANTAGE - (I) provides improved efficiency, improved operating voltage and/or improved durability to electronic device.    DETAILED DESCRIPTION - Iridium complexes of formula ((lr(L)n(L1)m)) (I), are new. (I) has a partial structure (Ir(L)n) which is an iridium complex of formula (II).    Y1 = CR or N, where maximum of Y1 per cycle is N;    2Y1 = benzene derivative of formula (IIIa);    X = CR or N, where at least two X per ligand is N; either    R = H, D, F, Cl, H, D, F, Cl, Br, I, N(R1)2, CN, Si(R1)3, B(OR1)2, C(=O)R1, straight chain 1-40C alkyl, 1-40C alkoxy, 1-40C thioalkoxy, 2-40C straight chain 2-40C alkenyl, 2-40C alkynyl, branched or cyclic 3-40C alkyl, 3-40C alkenyl, 3-40C alkynyl, 3-40C alkoxy, 3-40C thioalkoxygruppe (which are respectively substituted with R1, where at least one non adjacent CH2 is replaced by R1C=CR1, Si(R1)2, C=O, NR1, O, S or CONR1, and at least one H is replaced by D, F or CN), aromatic or heteroaromatic ring system with 5-60 aromatic ring atoms (which are respectively substitutes with R1), aryloxy- or heteroaryloxy with 5-60 aromatic ring atoms (which are respectively substitutes with R1), or diarylamino, diheteroaryl-amino or arylheteroarylamino with 10-40 aromatic ring atoms (which are respectively substitutes with R1); or    at least 2 R = mono- or polycyclic, aliphatic, aromatic or benzo-fused ring system; and    R+C = cyclopentene of formula (IIa) or (IIb); either    R1 = H, D, F, Cl, Br, I, N(R2)2, CN, Si(R2)3, B(OR2)2, C(=O)R2, straight chain 1-40C alkyl, 1-40C alkoxy, 1-40C thioalkoxy, straight chain 2-40C alkenyl, 2-40C alkinyl, branched or cyclic 3-40C alkyl, 3-40C alkenyl, 3-40C alkinyl, 3-40C alkoxy, 3-40C thioalkoxy (which are respectively substituted with R2, where at least one non adjacent CH2 is replaced by R C=CR2, Si(R2)2, C=O, NR2, O, S or CONR2 and at least one H is replaced by D, F or CN), aromatic or heteroaromatic ring system with 5-60 aromatic ring atoms (which are respectively substituted with R2), aryloxy- or heteroaryloxy with 5-60 aromatic ring atoms which are respectively substituted with R2), diarylamino, diheteroaryl- amino or arylheteroarylamino with 10-40 aromatic ring atoms (which is substituted with R2); or    2R1 = mono- or polycyclic, aliphatic ring system;    R2 = H, D, F aliphatic, aromatic or heteroaromatic 1-20C organic group, (in which at least one H is replaced by D or F;    2R2 = mono- or polycyclic, aliphatic or aromatic ring system;    L1 = mono- or bidentate ligand;    n = 1-3;    m = 0-4;    a = connection of the two carbon atoms in the ligand;    A1, A3 = C(R3)2, O, S, NR3 or C(=O);    A2 = C(R1)2, O, S, NR3 or C(=O), where no two hetero atoms are directly bonded to each other and not two groups C=0 are directly bonded to each other in A1-A2-A3;    G = 1C, 2C or 3C alkylene (which is substituted with R2), -CR2=CR2- or ortho-linked arylene or heteroarylene with 5-14 aromatic ring atoms which is substituted with R2; either    R3 = F, straight chain 1-10C alkyl, 1-10C alkoxy, branched or cyclic 3-10C alkyl, 3-10C alkoxy (which are respectively substituted with R2, where at least one non-adjacent CH2 is replaced by R2C=CR2, CC, Si(R2)2, C=O, NR2, O, S or CONR2 and at least one H is replaced by D or F), aromatic or heteroaromatic ring system with 5-24 aromatic ring atoms (which are respectively substituted with R2), aryloxy- or heteroaryloxy with 5-24 aromatic ring atoms (which is substituted with R2), aralkyl- or heteroaralkyl with 5-24 aromatic ring atoms (which is substituted with R2); or    2R3C = aliphatic or aromatic ring system or spiro system; and    R3+R, R3+R1 = aliphatic ring system.    INDEPENDENT CLAIMS are also included for:    (1) the preparation of (I);    (2) a formulation comprising (I) and at least one further compound, preferably solvent; and    (3) an electronic device comprising (I), where the electronic device comprises organic electro-luminescent 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.