Iridium complex compound, composition containing the compound and solvent, organic electroluminescent element containing the compound, display device, and illumination device

An iridium complex compound denoted by a formula (1) below,

• in the formula (1), Ir represents an iridium atom,
• a ring Cy1 represents a monocyclic or fused aromatic ring or a monocyclic or fused heteroaromatic ring, which includes carbon atoms C1 and C2,
• a ring Cy2 represents a monocyclic or fused heteroaromatic ring, which includes carbon atom C3 and a nitrogen atom N1,
• each of R1 and R2 represents a hydrogen atom or a substituent,
• a represents an integer of 0 or more, an upper limit of which is the maximum number of possible substituents on the ring Cy1,
• b represents an integer of 0 or more, an upper limit of which is the maximum number of possible substituents on the ring Cy2,
• when there are a plurality of R1 and a plurality of R2, the plurality of R1 and the plurality of R2 are independent of each other and may be the same or may differ from each other, and
• at least one of R1 and R2 is a substituent denoted by a formula (2) below or a substituent further substituted with a substituent denoted by a formula (2) below,
• in the formula (2), a broken line represents a bonding hand,
• each of a ring Cy3, a ring cy4, and a ring Cy5 represents an aromatic ring or a heteroaromatic ring,
• each of R3 to R6 represents a hydrogen atom or a substituent,
• each of x, y, and z represents an integer of 0 or more, an upper limit of which is the maximum number of possible substituents on the ring Cy3, the ring cy4, and the ring Cy5, respectively, and
• two R6 and a plurality of R3 to a plurality of R5 when there are a plurality of R3 to a plurality of R5 are independent of each other and may be the same or may differ from each other.