Patent ID: 7968874

Claim:
An organic electroluminescent device material comprising an organic metal complex represented by the following general formula (I) wherein, R 1 to R 5 each is independently a monovalent substituent selected from hydrogen atoms, deuterium atoms, alkyl groups, aralkyl groups, alkenyl groups, a cyano group, alkoxy groups, substituted or unsubstituted aromatic hydrocarbon groups and substituted or unsubstituted aromatic heterocyclic groups; in the case where the monovalent substituent has hydrogen atoms, the hydrogen atoms may be deuterium atoms and D is a deuterium atom; L is a monovalent group represented by the following formula (1), (2), (3), or (4) in which Ar 1 to Ar 5 each is independently a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted aromatic heterocyclic group, Z is silicon or germanium, and R 1 to R 5 and D are as defined in general formula (I).