An object is to provide an organometallic complex whose phosphorescence characteristics can be adjusted by varying the structure of a ligand. Alternatively, an object is to provide an organometallic complex capable of emitting yellow phosphorescence with high luminance. Alternatively, an object is to provide a light-emitting device with high added value. An organometallic complex which has a structure represented by a general formula (G1) below and at least one substituent group represented by a general formula (G2) below as a phenyl group and is formed in such a way that a phenylpyrazine derivative represented by a general formula (G0) below is ortho-metalated by an ion of a Group 9 metal or of a Group 10 metal is provided. Alternatively, a light-emitting element and a light-emitting device formed including the organometallic complex are provided.
本发明的一个目的是提供一种有机
金属配合物,其荧光特性可以通过改变
配体结构来调节。或者,本发明的另一个目的是提供一种能够发出高亮度黄色荧光的有机
金属配合物。或者,本发明的另一个目的是提供一种高附加值的发光装置。提供一种有机
金属配合物,其具有以下通式(G1)所代表的结构,并且至少有一个通式(G2)所代表的苯基取代基,是通过使以下通式(G0)所代表的苯基
吡嗪衍
生物被第9族
金属或第10族
金属的离子所正
金属化而形成的。或者,提供包括该有机
金属配合物的发光元件和发光装置。