| 主权项 |
1. A compound of formulae (30), (31), (32), or (33) wherein B is a boron atom; X is, identically or differently on each occurrence, OR2, SR2, N(R2)2, NHR2, or OBAr2; Y is, identically or differently on each occurrence, Ar or X; Ar is, identically or differently on each occurrence, an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms optionally substituted by one or more R1; R1 is, identically or differently on each occurrence, F, Cl, Br, I, CN, a straight-chain alkyl, alkoxy, or thioalkoxy chain having up to 40 C atoms optionally substituted by R3, or a branched or cyclic alkyl, alkoxy, or thioalkoxy chain having 3 to 40 C atoms, optionally substituted by R3, wherein one or more non-adjacent C atoms of said straight-chain, branched, or cyclic alkyl, alkoxy, or thioalkoxy chain is optionally replaced by N—R3, O, S, CO, O—CO—O, CO—O, —CR3═CR3—, or —C≡C— and wherein one or more H atoms of said straight-chain, branched, or cyclic alkyl, alkoxy, or thioalkoxy chain is optionally replaced by F, Cl, Br, I, CN, or an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms optionally substituted by one or more R3, or a combination of two, three or four of these systems; and wherein two or more R1 optionally define a mono- or polycyclic, aliphatic, or aromatic ring system; R2 is, identically or differently on each occurrence, a straight-chain alkyl chain having up to 40 C atoms optionally substituted by R3 or a branched or cyclic alkyl chain having 3 to 40 C atoms optionally substituted by R3; wherein one or more non-adjacent C atoms is optionally replaced by N—R3, O, S, CO, O—CO—O, CO—O, —CR3═CR3—, or —C≡C—, with the proviso that a heteroatom is not bonded directly to the oxygen or sulfur or nitrogen of the group X or Y; and wherein one or more H atoms is optionally replaced by F, Cl, Br, I, CN, or an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms optionally substituted by one or more radicals R3, or a combination of two, three or four of these systems; and wherein two or more radicals R2 optionally define a mono- or polycyclic, aliphatic, or aromatic ring system; R3 is, identically or differently on each occurrence, H or an aliphatic or aromatic hydrocarbon radical having up to 20 C atoms; DCy is, identically or differently on each occurrence, a cyclic group which contains at least one donor atom via which the cyclic group is bonded to the metal and which is optionally substituted with one or more R1; and wherein DCy is bonded to CCy via at least one covalent bond; CCy is, identically or differently on each occurrence, a cyclic group which contains a carbon atom via which the cyclic group is bonded to the metal and which is optionally substituted with one or more R1; and wherein CCy is bonded to DCy via at least one covalent bond; A is, identically or differently on each occurrence, a monoanionic ligand which chelates in a bidentate manner; z is, identically or differently on each occurrence, 0, 1, 2, 3, 4, 5, or 6, with the proviso that at least one z in each complex is an integer other than 0, and with the proviso that z cannot be an integer greater than the maximum number of substitutable hydrogen atoms on the corresponding ring DCy or CCy. |
