Patent ID: 7534506

Claim:
A metal coordination compound, which can be used in a luminescence device, represented by the following formula (1): wherein M denotes Ir, Rh or Pd; n is 2 or 3; and X 1 and X 4 independently denote a hydrogen atom or a substituent selected from the group consisting of a halogen atom; a trifluoromethyl group; a trialkylsilyl group having three linear or branched alkyl groups each independently having 1-8 carbon atoms; and a linear or branched alkyl group having 2-20 carbon atoms including a hydrogen atom which can be replaced with a fluorine atom; X 2 denotes a fluorine atom; X 3 denotes a trifluoromethyl group; and X 5 to X 8 independently denote a hydrogen atom or a substituent selected from the group consisting of a halogen atom; a nitro group; a trifluoromethyl group; a trialkylsilyl group having three linear or branched alkyl groups each independently having 1-8 carbon atoms; and a linear or branched alkyl group having 2-20 carbon atoms in which said alkyl group one methylene group or at least two non-neighboring methylene groups can be replaced with —O—, —S—, —C(O)—, —C(O)—O—, —O—C(O)—, —CH═CH— or —C≡C—.