A composition comprising a metal complex represented by the formula (1) and a metal complex represented by the formula (2):
[wherein, M1 represents an iridium atom and the like; n1 represents an integer of 1 or more; n2 represents an integer of 0 or more; Ring R1A represents a triazole ring and the like; Ring R2 represents an aromatic hydrocarbon ring and the like; R11A to R13A are each a hydrogen atom or a substituent; A1-G1-A2 represents an anionic bidentate ligand. At least one of E11A to E13A is a nitrogen atom, and at least one of R11A to R13A bonding to the nitrogen atom is a group represented by the formula (Ar-1A).]
[wherein, Ring A represents an aromatic hydrocarbon ring and the like; R2 represents a substituent.]
[wherein, M2 represents an iridium atom and the like; n3 represents an integer of 1 or more; n4 represents an integer of 0 or more; EL represents a carbon atom and the like; Ring L1 represents a 6-membered aromatic hetero ring; Ring L2 represents an aromatic hydrocarbon ring and the like; A3-G2-A4 represents an anionic bidentate ligand. At least one of Ring L1 and Ring L2 has a group represented by the formula (1-T).]
-R1T (1-T)
[wherein, R1T represents a substituent.].
一种由式(1)代表的
金属络合物和式(2)代表的
金属络合物组成的组合物:
[其中,M1 代表
铱原子等;n1 代表 1 或 1 以上的整数;n2 代表 0 或 0 以上的整数;环 R1A 代表三唑环等;环 R2 代表
芳香烃环等;R11A 至 R13A 各为氢原子或取代基;A1-G1-A2 代表阴离子双齿
配体。E11A至E13A中至少有一个是氮原子,与氮原子键合的R11A至R13A中至少有一个是式(Ar-1A)所代表的基团。]
[其中,环 A 代表
芳香烃环等;R2 代表取代基。]
[其中,M2 代表
铱原子等;n3 代表 1 或 1 以上的整数;n4 代表 0 或 0 以上的整数;EL 代表碳原子等;环 L1 代表 6 元芳香杂环;环
L2 代表
芳香烃环等;A3-G2-A4 代表阴离子双齿
配体。环 L1 和环
L2 中至少有一个具有式 (1-T) 所代表的基团。]
-R1T (1-T)
[其中,R1T 代表取代基。]