| abstract |
An object is to enrich variations of organometallic complexes that can emit phosphorescence. In addition, an organometallic complex having a sharp emission spectrum and high emission efficiency is provided. Furthermore, a light-emitting element having a wide variety of emission colors is provided by manufacturing a light-emitting element using these organometallic complexes. In addition, a light-emitting element with high color purity and high light emission efficiency is provided. An organometallic complex having a structure represented by the following general formula (G1) is synthesized and applied to a light-emitting element. (In the formula, R 1 represents either an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or an alkoxycarbonyl group having 1 to 5 carbon atoms. Also, R 2 and R 3 are It represents either hydrogen or an alkyl group having 1 to 4 carbon atoms, Ar represents an arylene group having 6 to 25 carbon atoms, M is a central metal, and is a group 9 element or group 10 Represents any of the elements.) [Selection figure] None |