TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preparation (Claimed): Preparation of (I) comprises reacting (II) and/or its precursor with a metal alcoholate compound of formula ((MOR1)p) (XXXIV), or a metal ketoketonate compound of formula (XXXV) or a metal halide of formula ((MHal)p) (XXXVI).Either R1 = diarylamino, diheteroarylamino or arylheteroarylamino with 10-40 aromatic ring atoms (which is optionally substituted by one or more R1), H, F or an aliphatic, aromatic and/or heteroaromatic 1-20C hydrocarbon atoms (in which one or more H atoms are substituted by F); or2R1 = a mono- or polycyclic aliphatic or aromatic ring system;Hal = F, Cl, Br or I;Lig = neutral or monoanionic, univalent or divalent ligand, preferably halide or OH;p = 1-5; andq = 0-4, preferably 0-2. Preferred Definitions:    M = W, Re, Ru, Os, Rh, Ir, Pt, Ag, Sc, Y, La, Al, Ga or In;    V1 = B, BR-, CR, CO-, CN(R1)2, SiR, N, NO, NR+, P, PO, PS, As, AsO, AsS, Sb, SbO, SbS, S+ or Se+ ; either    R = H, F, Cl, Br, I, N(R1)2, CN, NO2, Si(R1)3, B(OR1)2, C(=O)R1, P(=O)(R1)2, S(=O)R1, S(=O)2R1, OSO2R1, 1-40C-alkyl, 1-40C-alkoxy, 1-40C-thioalkoxy, or cyclic 3-40C-alkyl, 3-40C-alkoxy, 3-40C-thioalkoxy (which is optionally substituted by one or more R1, where one or more non-adjacent CH2-group is substituted by R1C=CR1, C=O, C=S, C=Se, C=NR1, P(=O)(R1), SO, SO2, NR1, O, S or CONR1 and one or more H atoms are substituted by F, Cl, Br, I, CN or NO2) or an aromatic or heteroaromatic ring system with 5-60 aromatic ring atoms (which are optionally substituted by one or more R1), or an aryloxy or heteroaryloxy group with 5-60 aromatic ring atoms; or    2R = a mono- or polycyclic aliphatic, aromatic and/or benzoannelated ring system;    D1, D2 = N, P, O or S; and    L2, L3 = optionally substituted beta -ketoketonate, beta -ketoester, beta -diester, carboxylate derived from aminocarboxylic acid, iminoacetoacetonate, hydroxamate, pyridylphosphine, alpha -phosphinocarboxylate, glycol ether, ether alcoholate, dialcoholate of dialcohol, dithiolate derived from dithiol, diamine, imine, diimine, diphosphine or salicyliminate of salicylimine.    SPECIFIC COMPOUNDS - 264 Complexes (I) are disclosed e.g. tris(2-(phenylmethyl)-6-pyridyl)methyl-methylether-iridium(III) of formula (Ia), tris(2-fluoromethyl-6-phenoxy-pyridine)-iridium(III), tris((6-fluoromethyl-pyridin-2-yl)-diphenyl-amine)-iridium(III), tris((6-(bis-(4-fluoro-phenyl)-amino)-pyridin-2-yl)-methanol)-iridium(III) and 2-tris(fluoromethyl-6-(9-phenyl-9H-fluoren-9-yl)-pyridine)-iridium(III).    EXAMPLE - A suspension of tris(2-(phenylmethyl)-6-pyridyl)methyl-methylether (2.74 g) and sodium-dichloro-bisacetylacetonato-iridate(III) (2.42 g) in ethylene glycol (20 ml) was heated at 170 degrees C for 20 hours and cooled. The obtained mixture was diluted with water (100 ml). The aqueous phase was extracted thrice with dichloromethane (50 ml). The organic phase was dried over magnesium sulfate, concentrated and recrystallized from dichloromethane/methanol to obtain tris(2-(phenylmethyl)-6-pyridyl)methyl-methylether-iridium(III) (1.23 g) and purity of greater than 99.5%.