ORGANOMETALLIC COMPOUND, ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME, AND ELECTRONIC APPARATUS INCLUDING THE ORGANIC LIGHT-EMITTING DEVICE

1 . An organometallic compound represented by Formula 1:

M(L 1 ) n1 (L 2 ) n2   Formula 1

wherein, in Formula 1,

M is iridium,

L 1 is a ligand represented by Formula 2A,

n1 is 2, and two L 1 (s) are identical to or different from each other,

L 2 is a ligand represented by Formula 2B,

n2 is 1,

L 1 and L 2 are different from each other,

wherein, in Formulae 2A and 2B,

Y 1 and Y 4 are each independently C or N,

X 1 is Si or Ge,

X 21 is O, S, S(═O), N(Z 29 ), C(Z 29 )(Z 30 ), or Si(Z 29 )(Z 30 ),

T 1 to T 4 are each independently C, N, carbon bonded to ring CY 1 , or carbon bonded to M in Formula 1, and one of T 1 to T 4 is carbon bonded to M in Formula 1, and one of the others of T 1 to T 4 which are not bonded to M is carbon bonded to ring CY 1 ,

T 5 to T 8 are each independently C or N,

ring CY 1 and ring CY 14 are each independently a C 5 -C 30 carbocyclic group or a C 1 -C 30 heterocyclic group,

R 21 to R 23 are each independently a C 1 -C 60 alkyl group or a C 6 -C 60 aryl group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a phenyl group, or any combination thereof,

Z 1 , Z 2 , Z 29 , Z 30 , and R 11 to R 14 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, —SF 5 , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C 1 -C 60 alkyl group, a substituted or unsubstituted C 2 -C 60 alkenyl group, a substituted or unsubstituted C 2 -C 60 alkynyl group, a substituted or unsubstituted C 1 -C 60 alkoxy group, a substituted or unsubstituted C 1 -C 60 alkylthio group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 6 -C 60 aryloxy group, a substituted or unsubstituted C 6 -C 60 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —N(Q 1 )(Q 2 ), —Si(Q 3 )(Q 4 )(Q 5 ), —Ge(Q 3 )(Q 4 )(Q 5 ), —B(Q 6 )(Q 7 ), —P(═O)(Q 8 )(Q 9 ), or —P(Q 8 )(Q 9 ),

a1 and b1 are each independently an integer from 0 to 20, wherein when a1 is 2 or more, two or more of Z 1 (s) are identical to or different from each other, and when b1 is 2 or more, two or more of R 14 (s) are identical to or different from each other, a2 is an integer from 0 to 6, wherein, when a2 is 2 or more, two or more of Z 2 (s) are identical to or different from each other,

at least one of Z 1 (s) in the number of a1 in Formula 2A is not hydrogen,

two or more of R 21 to R 23 are optionally linked to each other to form a C 5 -C 30 carbocyclic group that is unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group that is unsubstituted or substituted with at least one R 10a ,

two or more of a plurality of Z 1 (s) are optionally linked to each other to form a C 5 -C 30 carbocyclic group that is unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group that is unsubstituted or substituted with at least one R 10a ,

two or more of a plurality of Z 2 (s) are optionally linked to each other to form a C 5 -C 30 carbocyclic group that is unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group that is unsubstituted or substituted with at least one R 10a ,

R 12 and R 13 are optionally linked to each other to form a C 5 -C 30 carbocyclic group that is unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group that is unsubstituted or substituted with at least one R 10a ,

two or more of a plurality of R 14 (s) are optionally linked to each other to form a C 5 -C 30 carbocyclic group that is unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group that is unsubstituted or substituted with at least one R 10a ,

two or more of Z 1 , Z 2 and R 11 to R 14 are optionally linked to each other to form a C 5 -C 30 carbocyclic group that is unsubstituted or substituted with at least one R 10a or a C 1 -C 30 heterocyclic group that is unsubstituted or substituted with at least one R 10a ,

R 10a is the same as described in connection with R 14 ,

* and *′ in Formulae 2A and 2B each indicate a binding site to M in Formula 1, and

a substituent of the substituted C 1 -C 60 alkyl group, the substituted C 2 -C 60 alkenyl group, the substituted C 2 -C 60 alkynyl group, the substituted C 1 -C 60 alkoxy group, the substituted C 1 -C 60 alkylthio group, the substituted C 3 -C 10 cycloalkyl group, the substituted C 1 -C 10 heterocycloalkyl group, the substituted C 3 -C 10 cycloalkenyl group, the substituted C 1 -C 10 heterocycloalkenyl group, the substituted C 6 -C 60 aryl group, the substituted C 6 -C 60 aryloxy group, the substituted C 6 -C 60 arylthio group, the substituted C 1 -C 60 heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic condensed heteropolycyclic group is:

deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, or a C 1 -C 60 alkoxy group,

a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, or a C 1 -C 60 alkoxy group, each substituted with deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, —N(Q 11 )(Q 12 ), —Si(Q 13 )(Q 14 )(Q 15 ), —Ge(Q 13 )(Q 14 )(Q 15 ), —B(Q 16 )(Q 17 ), —P(═O)(Q 18 )(Q 19 ), —P(Q 18 )(Q 19 ), or any combination thereof;

a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, —N(Q 21 )(Q 22 ), —Si(Q 23 )(Q 24 )(O 25 ), —Ge(Q 23 )(Q 24 )(025), —B(Q 26 )(Q 27 ), —P(═O)(Q 28 )(Q 29 ), —P(Q 28 )(Q 29 ), or any combination thereof;

—N(Q 31 )(Q 32 ), —Si(Q 33 )(Q 34 )(Q 35 ), —Ge(Q 33 )(Q 34 )(Q 35 ), —B(Q 36 )(Q 37 ), —P(═O)(Q 38 )(Q 39 ), or —P(Q 38 )(Q 39 ); or

any combination thereof,

wherein Q 1 to Q 9 , Q 11 to Q 19 , Q 21 to Q 29 , and Q 31 to Q 39 used herein are each independently: hydrogen; deuterium; —F; —Cl; —Br; —I; a hydroxyl group; a cyano group; a nitro group; an amino group; an amidino group; a hydrazine group; a hydrazone group; a carboxylic acid group or a salt thereof; a sulfonic acid group or a salt thereof; a phosphoric acid group or a salt thereof; a C 1 -C 60 alkyl group which is unsubstituted or substituted with deuterium, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or any combination thereof; a C 2 -C 60 alkenyl group; a C 2 -C 60 alkynyl group; a C 1 -C 60 alkoxy group; a C 3 -C 10 cycloalkyl group; a C 1 -C 10 heterocycloalkyl group; a C 3 -C 10 cycloalkenyl group; a C 1 -C 10 heterocycloalkenyl group; a C 6 -C 60 aryl group which is unsubstituted or substituted with deuterium, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or any combination thereof; a C 6 -C 60 aryloxy group; a C 6 -C 60 arylthio group; a C 1 -C 60 heteroaryl group; a monovalent non-aromatic condensed polycyclic group; or a monovalent non-aromatic condensed heteropolycyclic group.

2 . The organometallic compound of claim 1 , wherein

two L 1 (s) are identical to each other.

3 . The organometallic compound of claim 1 , wherein

X 21 in Formula 2A is O or S.

4 . The organometallic compound of claim 1 , wherein

each of T 1 to T 8 in Formula 2A is not N.

5 . The organometallic compound of claim 1 , wherein

ring CY 1 in Formula 2A is a pyridine group, a pyrimidine group, an imidazole group, an oxazole group, a thiazole group, a benzimidazole group, a benzoxazole group, a benzothiazole group, a pyridoimidazole group, a pyridooxazole group, a pyridothiazole group, a naphthoimidazole group, a naphthooxazole group, or a naphthothiazole group.

6 . The organometallic compound of claim 1 , wherein

Z 1 , Z 2 , Z 29 , Z 30 , and R 11 to R 14 in Formulae 2A and 2B are each independently:

hydrogen, deuterium, —F, or a cyano group;

a C 1 -C 20 alkyl group, unsubstituted or substituted with deuterium, —F, a cyano group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a deuterated C 1 -C 10 heterocycloalkyl group, a (C 1 -C 20 alkyl)C 1 -C 10 heterocycloalkyl group, a phenyl group, a deuterated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a biphenyl group, a deuterated biphenyl group, a (C 1 -C 20 alkyl)biphenyl group, or any combination thereof; or

a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a dibenzofuranyl group, or a dibenzothiophenyl group, each unsubstituted or substituted with —F, a cyano group, a C 1 -C 20 alkyl group, a deuterated C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a deuterated C 1 -C 10 heterocycloalkyl group, a (C 1 -C 20 alkyl)C 1 -C 10 heterocycloalkyl group, a phenyl group, a deuterated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a biphenyl group, a deuterated biphenyl group, a (C 1 -C 20 alkyl)biphenyl group, —Si(Q 33 )(Q 34 )(Q 35 ), —Ge(Q 33 )(Q 34 )(Q 35 ), or any combination thereof.

7 . The organometallic compound of claim 1 , wherein

at least one of Z 1 (s) in the number of a1 in Formula 2A is deuterium, —F, or a cyano group;

a C 1 -C 20 alkyl group, unsubstituted or substituted with deuterium, —F, a cyano group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a deuterated C 1 -C 10 heterocycloalkyl group, a (C 1 -C 20 alkyl)C 1 -C 10 heterocycloalkyl group, a phenyl group, a deuterated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a biphenyl group, a deuterated biphenyl group, a (C 1 -C 20 alkyl)biphenyl group, or any combination thereof; or

a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a dibenzofuranyl group, or a dibenzothiophenyl group, each unsubstituted or substituted with —F, a cyano group, a C 1 -C 20 alkyl group, a deuterated C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a deuterated C 1 -C 10 heterocycloalkyl group, a (C 1 -C 20 alkyl)C 1 -C 10 heterocycloalkyl group, a phenyl group, a deuterated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a biphenyl group, a deuterated biphenyl group, a (C 1 -C 20 alkyl)biphenyl group, —Si(Q 33 )(Q 34 )(Q 35 ), —Ge(Q 33 )(Q 34 )(Q 35 ), or any combination thereof.

8 . The organometallic compound of claim 1 , wherein

wherein, in Formula 2A,

Y 1 is N,

ring CY 1 is a pyridine group, and

at least one of Z 1 (s) in the number of a1 is a C 1 -C 20 alkyl group, unsubstituted or substituted with deuterium, —F, a cyano group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a deuterated C 1 -C 10 heterocycloalkyl group, a (C 1 -C 20 alkyl)C 1 -C 10 heterocycloalkyl group, a phenyl group, a deuterated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a biphenyl group, a deuterated biphenyl group, a (C 1 -C 20 alkyl)biphenyl group, or any combination thereof.

9 . The organometallic compound of claim 1 , wherein

in Formula 2A,

Y 1 is N,

ring CY 1 is a benzimidazole group, a benzoxazole group, a benzothiazole group, a pyridoimidazole group, a pyridooxazole group, a pyridothiazole group, a naphthoimidazole group, a naphthooxazole group, or a naphthothiazole group, and

at least one of Z 1 (s) in the number of a1 is a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a dibenzofuranyl group, or a dibenzothiophenyl group, each unsubstituted or substituted with —F, a cyano group, a C 1 -C 20 alkyl group, a deuterated C 1 -C 20 alkyl group, a C 3 -C 10 cycloalkyl group, a deuterated C 3 -C 10 cycloalkyl group, a (C 1 -C 20 alkyl)C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a deuterated C 1 -C 10 heterocycloalkyl group, a (C 1 -C 20 alkyl)C 1 -C 10 heterocycloalkyl group, a phenyl group, a deuterated phenyl group, a (C 1 -C 20 alkyl)phenyl group, a biphenyl group, a deuterated biphenyl group, a (C 1 -C 20 alkyl)biphenyl group, —Si(Q 33 )(Q 34 )(Q 35 ), —Ge(Q 33 )(Q 34 )(Q 35 ), or any combination thereof.

10 . The organometallic compound of claim 1 , wherein

R 12 in Formula 2B is not hydrogen or a methyl group.

11 . The organometallic compound of claim 1 , wherein

in Formula 2A, Y 1 is N and ring CY 1 is a benzimidazole group, a benzoxazole group, a benzothiazole group, a pyridoimidazole group, a pyridooxazole group, a pyridothiazole group, a naphthoimidazole group, a naphthooxazole group, or a naphthothiazole group, and

in Formula 2B, R 12 is hydrogen or a methyl group.

12 . The organometallic compound of claim 1 , wherein

the organometallic compound satisfies at least one of Condition (1), Condition (2), or a combination thereof:

Condition (1)

in Formula 2B, R 14 is not hydrogen and b1 is an integer from 1 to 20;

Condition (2)

in Formula 2A, Z 2 is not hydrogen and a2 is an integer from 1 to 6.

13 . The organometallic compound of claim 1 , wherein

a group represented by

in Formula 2A is a group represented by one of Formulae CY1-1 to CY1-26:

wherein, in Formulae CY1-1 to CY1-26,

Z 11 to Z 17 are the same as described in connection with Z 1 , and each of Z 11 to Z 17 is not hydrogen,

* indicates a binding site to M in Formula 1, and

*″ is a binding site to one of T 1 to T 4 in Formula 2A.

14 . The organometallic compound of claim 1 , wherein

a group represented by

in Formula 2A is a group represented by one of Formulae CY2-1 to CY2-6:

wherein, in Formulae CY2-1 to CY2-6,

T 1 to T 8 are each independently C or N,

X 21 is the same as described in claim 1 ,

*″ is a binding site to ring CY 1 in Formula 2A, and

*′ is a binding site to M in Formula 1.

15 . The organometallic compound of claim 1 , wherein

a group represented by

in Formula 2B is represented by one of Formulae CY14(1) to CY14(63):

wherein, in Formulae CY14(1) to CY14(63),

R 14a to R 14d are each the same as described in connection with R 14 in claim 1 , and each of R 14a to R 14d is not hydrogen,

X 14 is C(R 1 )(R 2 ), N(R 1 ), O, S, or Si(R 1 )(R 2 ),

R 1 to R 8 are each the same as described in connection with R 14 in claim 1 ,

*″ is a binding site to a carbon atom of a neighboring pyridine ring in Formula 2B, and

*′ is a binding site to M in Formula 1.

16 . An organic light-emitting device comprising:

a first electrode,

a second electrode, and

an organic layer located between the first electrode and the second electrode and comprising an emission layer, wherein

the organic layer comprises at least one organometallic compound of claim 1 .

17 . The organic light-emitting device of claim 16 , wherein

the first electrode is an anode,

the second electrode is a cathode,

the organic layer further comprises a hole transport region located between the first electrode and the emission layer and an electron transport region located between the emission layer and the second electrode, wherein

the hole transport region comprises a hole injection layer, a hole transport layer, an electron-blocking layer, a buffer layer, or a combination thereof, and

the electron transport region comprises a hole-blocking layer, an electron transport layer, an electron injection layer, or a combination thereof.

18 . The organic light-emitting device of claim 16 , wherein

the at least one organometallic compound is included in the emission layer.

19 . The organic light-emitting device of claim 18 , wherein

the emission layer further comprises a host and the amount of the host is greater than the amount of the least one organometallic compound.

20 . An electronic apparatus comprising the organic light-emitting device of claim 16 .