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), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), ruthenium (Ru), iridium (Ir), or osmium (Os),
• X1 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,
• the remainder of a bond between X2 and M, a bond between X3 and M, and a bond between X4 and M are each a covalent bond,
• ring CY1 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 *—C(Z11)(Z12)—*′ or *—Si(Z11)(Z12)—*′,
• T2 is *—N(Z13)—*′, *—O—*′, *—S—*′, *—C(Z13)(Z14)—*′, or *—Si(Z13)(Z14)—*′,
• b2 is 0, 1, or 2, wherein T2 is not present when b2 is 0,
• * and *′ each indicate a binding site to a neighboring atom,
• R1 to R9 and Z11 to Z14 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), —P(Q1)(Q2), —C(═O)(Q1), —S(═O)(Q1), —S(═O)2(Q1), —P(═O)(Q1)(Q2), or —P(═S)(Q1)(Q2),
• a1 to a7 are each independently an integer from 0 to 20,
• each of two or more of R1 in the number of a1;
• two or more of R2 in the number of a2;
• two or more of R3 in the number of a3;
• two or more of R4 in the number of a4;
• two or more of R5 in the number of a5;
• two or more of R6 in the number of a6;
• two or more of R7 in the number of a7;
• R8 and R9;
• Z11 and Z12;
• and Z13 and Z14, are optionally bonded 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 bonded 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, —Si(Q11)(Q12)(Q13), —N(Q11)(Q12), —B(Q11)(Q12), —P(Q11)(Q12), —C(═O)(Q11), —S(═O)(Q11), —S(═O)2(Q11), —P(═O)(Q11)(Q12), —P(═S)(Q11)(Q12), or a combination thereof;
• a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, or a C6-C60 arylthio 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, —Si(Q21)(Q22)(Q23), —N(Q21)(Q22), —B(Q21)(Q22), —P(Q21)(Q22), —C(═O)(Q21), —S(═O)(Q21), —S(═O)2(Q21), —P(═O)(Q21)(Q22), —P(═S)(Q21)(Q22), or a combination thereof;
• or
• —Si(Q31)(Q32)(Q33), —N(Q31)(Q32), —B(Q31)(Q32), —P(Q31)(Q32), —C(═O)(Q31), —S(═O)(Q31), —S(═O)2(Q31), —P(═O)(Q31)(Q32), or —P(═S)(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;
• a C1-C60 alkyl group;
• a C2-C60 alkenyl group;
• a C2-C60 alkynyl group;
• a C1-C60 alkoxy group;
• or a C3-C60 carbocyclic group or a C1-C60 heterocyclic 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.