Organometallic Complex, and Light-Emitting Element and Display Device Using the Organometallic Complex

An organometallic complex represented by a general formula (G10),

• wherein:
• R1 represents an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 1 to 5 carbon atoms, or a phenyl group;
• R2 and R3 separately represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a phenyl group;
• R4, R5, R6, and R7 separately represent hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, halogen, a trifluoromethyl group, and a phenyl group;
• at least one of substituent groups R4, R5, R6, and R7 has a structure represented by a formula (G2):
• M represents a Group 9 element or a Group 10 element;
• n is 2 when M is a Group 9 element or 1 when M is a Group 10 element;
• and
• R8, R9, R10, R11, and R12 separately represent hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, halogen, a trifluoromethyl group, or a phenyl group.