title: Heterometallic Pd(II)-Ni(II) complexes with meso-substituted dibenzotetraaza[14]annulene: double C-H bond activation and formation of a rectangular tetradibenzotetraaza[14]annulene.
abstract: Three isomeric 2[Pd(II)-Ni(II)] 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[Pd(II)-Ni(II)] rectangular complex with dimensions of 8.73 × 10.38 Å.
authors.affiliation: Department of Chemistry, University of Malaya , Kuala Lumpur 50603, Malaysia.
authors.forename: Hamid
authors.initials: H
authors.lastname: Khaledi
authors.forename: Marilyn M
authors.initials: MM
authors.lastname: Olmstead
authors.forename: Takamitsu
authors.initials: T
authors.lastname: Fukuda
authors.forename: Hapipah Mohd
authors.initials: HM
authors.lastname: Ali