Metal coordination compound and organic luminescence device

A metal coordination compound represented by the following formula (1):

• wherein M1 and M2 independently denote a metal atom selected from the group consisting of Ir, Pt, Rh, Pd, Ru and Os;
• P is a quadridentate ligand connected to M1 and M2;
• Q1 is a bidentate ligand connected to M1;
• Q2 is a bidentate ligand connected to M2;
• and n is 1 or 2,
• wherein the bidentate ligand Q1 is represented by formula (2) shown below and the bidentate lingand Q2 is represented by formula (3) shown below:
• wherein CyN1 and CyN2 are each a cyclic group capable of having a substituent, including a nitrogen atom and bonded to the metal atom M1 or M2 via the nitrogen atom:
• CyC1 and CyC2 are each a cyclic group capable of having a substituent, including a carbon atom and bonded to the metal atom M1 or M2 via the carbon atom, with a proviso that the cyclic group CyN1 and the cyclic group CyC1 are bonded to each other via a covalent bond and the cyclic group CyN2 and the cyclic group CyC2 are bonded to each other via a covalent bond, and
• wherein the optional substituent of the cyclic groups is selected from the group consisting of:
• a halogen atom;
• a cyano group;
• a nitro group;
• a trialkylsilyl group of which the alkyl groups are independently a linear or branched alkyl group having 1 to 8 carbon atoms;
• a linear or branched alkyl group having 1 to 20 carbon atoms of which the alkyl group can include one or non-neighboring two or more methylene groups that can be replaced with —O—, —S—, —C(O)—, —C(O)—O—, —O—C(O)—, —CH═CH— or —C≡C—, and the alkyl group can include a hydrogen atom that can be optionally replaced with a fluorine atom;
• and
• an aromatic group capable of having a substituent, which is a halogen atom, a cyano atom, a nitro atom, a linear or branched alkyl group having 1 to 20 carbon atoms of which the alkyl group can include one or non-neighboring two or more methylene groups that can be replaced with —O—, —S—, —C(O)—, —C(O)—O—, —O—C(O)—, —CH═CH— or —C≡C—, and the alkyl group can include a hydrogen atom that can be optionally replaced with a fluorine atom.