Abstract: An iridium complex compound of formula (10): wherein Ir represents an iridium atom. m1 represents an integer of 1 or 2, n1 represents an integer of 1 or 2, and m1+n1=3. Ra1 at each occurrence represents an alkyl group or an aralkyl group. Rb1, Rc1, and R21 to R24 each independently represent a hydrogen atom or a substituent. and Ra1 to Rc1 and R21 to R24 may be further bonded to each other to form a ring, and wherein at least one of Rb1 and Rc1 is a substituted or unsubstituted aromatic or heteroaromatic group.

Abstract: An iridium complex compound of formula (10): wherein Ir represents an iridium atom. m1 represents an integer of 1 or 2, n1 represents an integer of 1 or 2, and m1+n1=3. Ra1 at each occurrence represents an alkyl group or an aralkyl group. Rb1, Rc1, and R21 to R24 each independently represent a hydrogen atom or a substituent. and Ra1 to Rc1 and R21 to R24 may be further bonded to each other to form a ring, and wherein at least one of Rb1 and Rc1 is a substituted or unsubstituted aromatic or heteroaromatic group.

Abstract: Provided is an iridium complex compound represented by formula (1) below. Ir is an iridium atom. L is a bidentate ligand. A ring Cy1 is an aromatic or heteroaromatic ring including carbon atoms C1 and C2. A ring Cy2 is a heteroaromatic ring including a carbon atom C3 and a nitrogen atom N1. R1 and R2 are each a hydrogen atom or a substituent. a and b are maximum integer numbers of possible substituents on the ring Cy1 and the ring Cy2, respectively. m is 1 to 3, n is 0 to 2, and m+n=3. At least one R1 is represented by formula (2) below. R5 to R11 are each a hydrogen atom or a substituent. Rxl and RX2 are each an alkyl group or an aralkyl group.

Abstract: Provided is an iridium complex compound represented by formula (1) below. [Ir is an iridium atom. C1 to C6 are carbon atoms. N1 and N2 are nitrogen atoms. R1 to R4 are each a hydrogen atom or a substituent. a to d are maximum integer numbers of possible substituents on rings Cy1 to Cy4, respectively. m and n are each 1 or 2, and m+n=3. The ring Cy1 is represented by formula (2) or (2?) below. The ring Cy3 is an aromatic or heteroaromatic ring including the carbon atoms C4 and C5. The ring Cy4 is a heteroaromatic ring including the carbon atom C6 and the nitrogen atom N2.

Abstract: Provided is an iridium complex compound represented by formula (1) below. Ir is an iridium atom. L is a bidentate ligand. A ring Cy1 is an aromatic or heteroaromatic ring including carbon atoms C1 and C2. A ring Cy2 is a heteroaromatic ring including a carbon atom C3 and a nitrogen atom N1. R1 and R2 are each a hydrogen atom or a substituent. a and b are maximum integer numbers of possible substituents on the ring Cy1 and the ring Cy2, respectively. m is 1 to 3, n is 0 to 2, and m+n=3. At least one R1 is represented by formula (2) below. R5 to R11 are each a hydrogen atom or a substituent. Rxl and RX2 are each an alkyl group or an aralkyl group.