NOVELTY - New coordination compounds (I) of metal(s) have a polypodal ligand with a bridging unit containing 1-80 atoms linking 3 identical or different sub-ligands, in which each sub-ligand has 2 linked (un)substituted, (un)saturated or aromatic homo- or heterocycles, optionally forming part of condensed systems and an ionic, covalent or coordinate bond between the metal and a ring atom or an exocyclic atom bound to the homo- or heterocycle.    USE - Compounds (I) and polymers and dendrimers containing (I) are used (claimed) in electronic devices, which are claimed per se. Electronic devices comprising an organic light-emitting diode (OLED), organic integrated circuit (O-IC), organic field-effect transistor (OFET), organic thin film transistor (OTFT), organic solar cell (O-SC) or organic laser diode (O-laser) are claimed.    ADVANTAGE - Metal complexes of polypodal ligands have excellent properties for use as electron transport layer, hole-blocking layer, matrix material in emitter layer, singlet emitter and also triplet emitter and each concrete function is determined by selecting suitable metals and ligands. In contrast to many known metal complexes (which undergo partial or complete pyrolysis on sublimation), (I) have great thermal stability, which greatly increases the operating life in devices. They show no significant hydrolysis or hygroscopic property and are unchanged after storing for days or weeks in the presence of air or moisture, which simplified purification, transport, storage and use. They are highly efficient when used as electron transport layer in electroluminescent equipment. (I) can be prepared in reliably high purity with good reproducibility and no carious between charges. Some have excellent solubility in organic solvents, which facilitates purification.    DETAILED DESCRIPTION - New metal coordination compounds (I) are of formula (1);    Met = metal(s);    Lig = a polypodal ligand of formula (2) with a bridging unit containing 1-80 atoms and 3 sub-ligands;    L1, L2, L3 = structure of formula (3);    Cy1, Cy2 = identical or different (un)substituted, (un)saturated or aromatic homo- or heterocycles, optionally forming part of condensed systems, with an ionic, covalent or coordinate bond between the metal and a ring atom or an exocyclic atom bound to the homo- or heterocycle.    The full definitions are given in the DEFINITIONS (Full Definitions) Field.    INDEPENDENT CLAIMS are also included for:    (1) new compounds (II) of 41 types corresponding to the preferred polypodal ligands;    (2) method of preparing compounds (I);    (3) (partly) conjugated or unconjugated polymers or dendrimers containing (I).