ORGANOMETALLIC COMPLEX, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE AND LIGHTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a novel organometallic complex with high emission efficiency and high heat resistance, which emits yellow green light.SOLUTION: The present invention provides an organometallic complex comprising a structure represented by formula (G1). (M is a metal belonging to group 9 or group 10; R-Rindependently represent H, a substituted/unsubstituted C1-6 alkyl group or a substituted/unsubstituted C6-10 aryl group; Ris H, a substituted/unsubstituted C1-6 alkyl group or a substituted/unsubstituted phenyl group; ring X is a substituted/unsubstituted six-membered aromatic ring formed of C or N).SELECTED DRAWING: None