NOVELTY - Polymer comprising metal coordination compound (I) as a structural unit, is new.    USE - The polymer is useful for electronic devices, preferably organic electroluminescent devices including an organic and polymeric organic electroluminescent device, an organic integrated circuit, an organic field-effect transistor, an organic thin film transistor, an organic solar cell, an organic laser diode, an organic photovoltaic element or device and/or an organic photoreceptor, preferably a polymeric organic electroluminescent device (all claimed).    ADVANTAGE - The polymer having structural units of formula (I): is easily producible with high yields; and exhibits excellent color coordination and improved lifespan, preferably of organic light-emitting diodes and improved properties that include improved optoelectronic properties, improved film-forming properties and improved phosphorescence.    DETAILED DESCRIPTION - Polymer comprising metal coordination compound of formula (I) as structural unit, is new.    W1E = repeating unit in the polymer;    Y1 = single covalent bond or conjugation interrupting unit;    T = phosphorescent emitter unit; and    n = 1-4.    INDEPENDENT CLAIMS are also included for:    (1) producing a polymer;    (2) a compound of formula (Z1-W1E(Z2)-(Y1-T)n) (II) , where two or more residues together forms a ring system;    (3) a mixture comprising at least one polymer and further polymeric, oligomeric, dendritic and/or low molecular weight substances;    (4) a solution or formulation of at least one polymer or a mixture of at least one solvent; and    (5) an organo electronic device with one or more active layers, where at least one of these active layers has at least the polymer.    Z1, Z2 = halo, O-tosylate, O-triflate, O-SO2R3, B(OR3)2 or Sn(R3)3; and    R3 = H, aliphatic 1-20C hydrocarbon or aromatic 1-20C hydrocarbon.    DESCRIPTION OF DRAWING(S) - The figures 1 and 2 show a schematic representation of the light emitting device and indium-tin oxide-structure (ITO) deposited on the glass substrate and the electronic structure with ITO respectively (The drawing includes non-English language text).