Organometallic compound, light-emitting device including the same, and electronic apparatus including the light-emitting device

A light-emitting device comprising:

• a first electrode;
• a second electrode facing the first electrode;
• an interlayer between the first electrode and the second electrode and comprising an emission layer;
• and
• an organometallic compound represented by Formula 1:
• wherein in Formula 1,
• M is platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), silver (Ag), or copper (Cu),
• X1 is C,
• X2 to X4 are each independently C or N,
• a bond between X1 and M is a coordinate bond,
• one of a bond between X2 and M, a bond between X3 and M, and a bond between X4 and M is a coordinate bond, and the remainder thereof are each a covalent bond,
• ring CY1 is a C1-C60 nitrogen-containing heterocyclic group comprising two N atoms as ring-forming atoms and X1,
• ring CY2 to ring CY7 are each independently a C3-C60 carbocyclic group or a C1-C60 heterocyclic group,
• L1 to L3 are each independently a single bond, *—C(R8)(R9)—*′, *—C(R8)=*′, *═C(R8)—*′, *—C(R8)═C(R9)—*′, *—C(═O)—*′, *—C(═S)—*′*—C≡C—*′*—B(R8)—*′, *—N(R8)—*′, *—O—*′*—P(R8)—*′, *—Si(R8)(R9)—*′, *—P(═O)(R8)—*′, *—S—*′*—S(═O)—*′, *—S(═O)2—*′ or *—Ge(R8)(R9)—*′,
• n1 to n3 are each independently an integer from 1 to 3,
• T1 is a single bond, *—C(Z1)(Z2)—*′, *—Si(Z1)(Z2)—*′, *—B(Z1)—*′, *—N(Z1)—*′, or *—P(Z1)—*′, but is not *—N(Ph)-*′,
• T2 is a single bond, *—C(Z3)(Z4)—*′, *—Si(Z3)(Z4)—*′, *—B(Z3)—*′, *—N(Z3)—*′, or *—P(Z3)—*′, but is not *—N(Ph)-*′,
• * and *′ each indicate a binding site to a neighboring atom,
• Ph is a phenyl group,
• b1 and b2 are each independently 1, 2, or 3,
• R1 to R9 and Z1 to Z4 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C1-C60 alkyl group unsubstituted or substituted with at least one R10a, a C2-C60 alkenyl group unsubstituted or substituted with at least one R10a, a C2-C60 alkynyl group unsubstituted or substituted with at least one R10a, a C1-C60 alkoxy group unsubstituted or substituted with at least one R10a, a C3-C60 carbocyclic group unsubstituted or substituted with at least one R10a, a C1-C60 heterocyclic group unsubstituted or substituted with at least one R10a, a C6-C60 aryloxy group unsubstituted or substituted with at least one R10a, a C6-C60 arylthio group unsubstituted or substituted with at least one R10a, —Si(Q1)(Q2)(Q3), —N(Q1)(Q2), —B(Q1)(Q2), —C(═O)(Q1), —S(═O)2(Q1), or —P(═O)(Q1)(Q2),
• a divalent carbon atom among R1 to R9 and Z1 to Z4 is optionally substituted with *—C(═O)—*′ or *—C(═S)—*′,
• a1 to a7 are each independently an integer from 0 to 20,
• at least one of Conditions a to c is satisfied:
• [Condition a]
• two or more R5(s) are connected to each other to form ring W, wherein ring W is a ring condensed with ring CY5;
• [Condition b]
• T1 is not a single bond, and at least one of Z1 and Z2 is connected to at least one of ring CY5 and ring CY6 to form ring W, wherein ring W is a ring condensed with at least one of ring CY5 and ring CY6;
• [Condition c]
• T2 is not a single bond, and at least one of Z3 and Z4 is connected to at least one of ring CY5 and ring CY7 to form ring W, wherein ring W is a ring condensed with at least one of ring CY5 and ring CY7,
• wherein ring W is a C3-C30 non-aromatic carbocyclic group unsubstituted or substituted with at least one R10a or a C1-C30 non-aromatic heterocyclic group unsubstituted or substituted with at least one R10a, and
• a ring-forming divalent carbon atom of ring W is optionally substituted with *—C(═O)—*′ or *—C(═S)—*′,
• in Formula 1, each of:
• two or more of R1(s) in the number of a1;
• two or more of R2(s) in the number of a2;
• two or more of R3(s) in the number of a3;
• two or more of R4(s) in the number of a4;
• two or more of R6(s) in the number of a6;
• two or more of R7(s) in the number of a7;
• and R8 and R9 are optionally linked to each other to form a C3-C60 carbocyclic group unsubstituted or substituted with at least one R10a or a C1-C60 heterocyclic group unsubstituted or substituted with at least one R10a,
• two or more of R1 to R4, R8, and R9 are optionally linked to each other to form a C3-C60 carbocyclic group unsubstituted or substituted with at least one R10a or a C1-C60 heterocyclic group unsubstituted or substituted with at least one R10a,
• R10a is:
• deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, or a nitro group;
• a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, or a C1-C60 alkoxy group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C7-C60 arylalkyl group, a C2-C60 heteroarylalkyl group, —Si(Q11)(Q12)(Q13), —N(Q11)(Q12), —B(Q11)(Q12), —C(═O)(Q11), —S(═O)2(Q11), —P(═O)(Q11)(Q12), or a combination thereof;
• a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C7-C60 arylalkyl group, or a C2-C60 heteroarylalkyl group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C7-C60 arylalkyl group, a C2-C60 heteroarylalkyl group, —Si(Q21)(Q22)(Q23), —N(Q21)(Q22), —B(Q21)(Q22), —C(═O)(Q21), —S(═O)2(Q21), —P(═O)(Q21)(Q22), or a combination thereof;
• or
• —Si(Q31)(Q32)(Q33), —N(Q31)(Q32), —B(Q31)(Q32), —C(═O)(Q31), —S(═O)2(Q31), or —P(═O)(Q31)(Q32), and
• Q1 to Q3, Q11 to Q13, Q21 to Q23, and Q31 to Q33 are each independently:
• hydrogen;
• deuterium;
• —F;
• —Cl;
• —Br;
• —I;
• a hydroxyl group;
• a cyano group;
• a nitro group;
• or a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C7-C60 arylalkyl group, or a C2-C60 heteroarylalkyl group, each unsubstituted or substituted with deuterium, —F, a cyano group, a C1-C60 alkyl group, a C1-C60 alkoxy group, a phenyl group, a biphenyl group, or a combination thereof.