Provided is a novel substance that can emit phosphorescence. Alternatively, provided is a novel substance with high emission efficiency. An organometallic complex in which a 4-arylpyrimidine derivative is a ligand and iridium is a central metal is provided. Specifically, an organometallic complex having a structure represented by a general formula (G1) is provided. In the general formula (G1), R1 represents a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms, R2 represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted phenyl group, R3 represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and Ar1 represents a substituted or unsubstituted arylene group having 6 to 10 carbon atoms.
提供了一种可以发射荧光的新物质。或者,提供了一种具有高发射效率的新物质。提供了一种有机
金属配合物,其中4-芳基
嘧啶衍
生物是
配体,
铱是中心
金属。具体而言,提供了一种具有通式(G1)表示的结构的有机
金属配合物。在通式(G1)中,R1表示具有1至4个碳原子的取代或未取代的烷基或具有6至10个碳原子的取代或未取代的芳基基团,R2表示氢、具有1至4个碳原子的取代或未取代的烷基基团和取代或未取代的苯基团中的任何一种,R3表示氢或具有1至4个碳原子的取代或未取代的烷基基团,Ar1表示具有6至10个碳原子的取代或未取代的芳撑基团。