| 摘要 |
The present invention provides a novel metal complex compound represented by the following general formula (1), and an organic electroluminescence element which has a high efficiency of light emission and a long lifetime, wherein one of organic thin film layers including at least a light emitting layer between an anode and a cathode, a least one of the organic thin film layers contains the metal complex compounds. (L1)mM(L2)n   (1) wherein M represents Ir, Pt and Rh; L1 and L2 represents mutually different bidentate ligands; (L1)mM as a partial structure is represented by general formula (2) and M(L2)n as a partial structure is represented by general formula (3): and m and n are each an integer of 1 or 2, provided that m+n is a integer of 2 or 3. wherein ring A1 represents an aromatic, hetrocyclic ring group: and ring B1 represents an aryl group, provided that the ring A1 and the ring B1 are covalently linked to each other via Z which represents a single bond or the like. wherein R1, R2, R2′ and R3 each independently represent an alkyl group or the like; R1 and R2, R1 and R2′, R2 and R2′. R2 and R3, and R2′ and R3 may combine with each other to form a cyclic structure; and Y represents a group represented by O or S.
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