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Heterometallic PdII–NiII Complexes with meso-Substituted Dibenzotetraaza[14]annulene: Double C–H Bond Activation and Formation of a Rectangular Tetradibenzotetraaza[14]annulene

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posted on 03.11.2014, 00:00 by Hamid Khaledi, Marilyn M. Olmstead, Takamitsu Fukuda, Hapipah Mohd Ali
Three isomeric 2­[PdII–NiII] metal complexes, derived from indoleninyl meso-substituted dibenzotetraaza[14]­annulene, were synthesized. The resulting dimers feature Ni···Ni or, alternatively, Ni···π interactions in staggered or slipped cofacial structures. A remarkable insertion of palladium into two different C–H bonds yielded a 4­[PdII–NiII] rectangular complex with dimensions of 8.73 × 10.38 Å.