Patent ID: 8608986

Claim:
A metal complex represented by the following formula (1): wherein M is a metal atom of iridium; R 1 to R 8 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an acyl group, an acyloxy group, an amide group, an acid imide group, an imine residue, a substituted amino group, a substituted silyl group, a substituted silyloxy group, a substituted silylthio group, a substituted silylamino group, a monovalent heterocyclic group, a heteroaryloxy group, a heteroarylthio group, an arylalkenyl group, an arylalkynyl group, a substituted carboxyl group or a cyano group, or R 3 and R 4 or R 5 and R 6 may bond to form a ring, provided that at least one of R 2 and R 7 is a group represented by the following formula (4-7): wherein each R′ independently represents a C 1 -C 12 alkoxyphenyl group or a C 1 -C 12 alkylphenyl group, and each R′ may be the same or different, and wherein m is an integer of 1 to 3, and n is an integer of 0 to 2; the moiety represented by the following formula (3): represents a monoanionic bidentate ligand; and R x and R y are an atom bonded to the metal atom M and each independently represent a carbon atom, an oxygen atom or a nitrogen atom.