Organometallic Complex, Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device

摘要

An organometallic complex emitting light with high color purity. The organometallic complex is represented by General Formula (G1). In General Formula (G1), L represents a monoanionic ligand; R1 represents a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms; each of R2 to R5 independently represents hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted phenyl group; the organometallic complex is monosubstituted, disubstituted, trisubstituted, tetrasubstituted, or unsubstituted by the R5; X represents O, S, or Se; and M represents a metal belonging to Group 9 or 10. When M represents a metal belonging to Group 9, in is 3 and n is 1, 2, or 3. When M represents a metal belonging to Group 10, m is 2 and n is 1 or 2.

主权项

1. An organometallic complex comprising:
a metal belonging to Group 9 or 10; and a ligand, wherein the ligand comprises a benzofuro[2,3-b]pyridine skeleton or a benzothieno[2,3-b]pyridine skeleton, and a pyrimidine ring, wherein carbon at the 2-position of the benzofuro[2,3-b]pyridine skeleton or the benzothieno[2,3-b]pyridine skeleton is bonded to the metal, wherein nitrogen at the 3-position of the pyrimidine ring is bonded to the metal, wherein carbon at the 3-position of the benzofuro[2,3-b]pyridine skeleton or the benzothieno[2,3-b]pyridine skeleton is bonded to carbon at the 4-position of the pyrimidine ring, and wherein carbon at the 6-position of the pyrimidine ring is bonded to an alkyl group or an aryl group.