Organic electronic device, display device comprising the organic electronic device as well as compounds for use in organic electronic devices

A compound represented by formula (3)

• wherein
• M is main group metal, or a transition metal;
• n is an integer from 1 to 4;
• R1 is independently selected from an unsubstituted C1 to C8 alkyl, a partially or perfluorinated C2 to C8 alkyl, a substituted or unsubstituted C6 to C20 aryl, a substituted or unsubstituted C2 to C20 heteroaryl, a substituted or unsubstituted C3 to C20 carbocyclyl, or a substituted or unsubstituted C2 to C20 heterocyclyl;
• R2 is independently selected from a substituted or unsubstituted C1 to C8 alkyl, substituted or unsubstituted C6 to C20 aryl, a substituted or unsubstituted C2 to C20 heteroaryl, a substituted or unsubstituted C3 to C20 carbocyclyl, or substituted or unsubstituted C2 to C20 heterocyclyl;
• if at least one of R1 and R2 is aryl or heteroaryl and at least one of the aryl and the heteroaryl is substituted, then the one or more substituent(s) on aryl and heteroaryl is/are independently selected from F, CN, or a partially or perfluorinated C1 to C8 alkyl;
• and
• the following compounds are excluded:
• and compounds are excluded which are represented by the formula (4)
• wherein
• R1a is pyridyl which is optionally substituted one to three times by a)-O-phenyl, wherein the phenyl is one or two times substituted by halogen, cyano, alkyl, alkoxy, nitro, amino, alkylamino or dialkylamino;
• b) —NRR′, wherein R and R1 independently represent hydrogen or alkyl;
• or alternatively R and R1 form together with the nitrogen atom to which they are attached a saturated 5 to 7 membered heterocycle, which is optionally substituted one to three times by alkyl or alkoxy;
• c) halogen;
• or d) alkyl;
• R2a is fluorine, chlorine, bromine, methyl, methoxy or trifluoromethyl;
• R3a is fluorine, chlorine, bromine, methyl or trifluoromethyl.

A compound represented by formula (5)

• wherein
• M is a metal;
• n is an integer from 1 to 4;
• X is Nor C—R2b;
• R1 is selected from a partially or perfluorinated C1 to C8 alkyl, a substituted phenyl or unsubstituted or substituted C3 to C5 heteroaryl, wherein the substituents are selected from fluorine, chlorine, bromine, methyl, methoxy or trifluoromethyl, or CN;
• R2a, R2b, and R2c are independently selected from fluorine, chlorine, bromine, methyl, methoxy or trifluoromethyl, or CN;
• and
• R3a and R3b are independently selected from a partially or perfluorinated C1 to C8 alkyl, or CN.