Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device

An organometallic complex comprising a structure represented by General Formula (G2):

• wherein each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms,
• wherein R6 represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms,
• wherein each of R7 to Ril independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or 10 unsubstituted aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group, and
• wherein at least one of R7 to R11 represents a cyano group.

An organometallic complex represented by General Formula (G3):

• wherein each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms,
• wherein each of R1 to R6 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms,
• wherein each of R7 to R11 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group,
• wherein at least one of R7 to R11 represents a cyano group, and
• wherein L represents a monoanionic ligand.

An organometallic complex represented by General Formula (G4):

• wherein each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms,
• wherein R6 represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms,
• wherein each of R7 to R11 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group,
• wherein at least one of R7 to R11 represents a cyano group, and
• wherein L represents a monoanionic ligand.

An organometallic complex represented by General Formula (G5):

• wherein each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms,
• wherein each of R1 to R6 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms,
• wherein each of R7 to R11 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group, and
• wherein at least one of R7 to R11 represents a cyano group.

An organometallic complex represented by General Formula (G6):

• wherein each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms,
• wherein R6 represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms,
• wherein each of R7 to R11 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group, and
• wherein at least one of R7 to R11 represents a cyano group.

An organometallic complex represented by General Formula (G7):

• wherein each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms,
• wherein each of R1 to R6 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms,
• wherein each of R7 to R11 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group, and
• wherein at least one of R7 to R11 represents a cyano group.

An organometallic complex represented by General Formula (G8):

• wherein each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms,
• wherein R6 represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms,
• wherein each of R7 to R11 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group, and
• wherein at least one of R7 to R11 represents a cyano group.