Trinuclear palladium addition to unsaturated carbocycles

The trinuclear palladium addition to monocyclic unsaturated hydrocarbons was revealed. The trinuclear adduct of [2.2]paracyclophane, cycloheptatriene (CHT), or cyclooctatetraene (COT) was obtained by treatment of the corresponding tripalladium sandwich complexes with 3 equiv. of 1,10-phenanthroline....

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2013-01, Vol.42 (29), p.10626-10632
Main Authors: Murahashi, Tetsuro, Takase, Kohei, Usui, Kentaro, Kimura, Seita, Fujimoto, Mayu, Uemura, Tomohito, Ogoshi, Sensuke, Yamamoto, Koji
Format: Article
Language:English
Subjects:
Adducts
Bearing
Bonding
Hydrocarbons
Joining
Ligands
Palladium
Unsaturated
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Summary:The trinuclear palladium addition to monocyclic unsaturated hydrocarbons was revealed. The trinuclear adduct of [2.2]paracyclophane, cycloheptatriene (CHT), or cyclooctatetraene (COT) was obtained by treatment of the corresponding tripalladium sandwich complexes with 3 equiv. of 1,10-phenanthroline. In the trinuclear adduct of [2.2]paracyclophane or CHT, a Pd2 unit and a Pd1 unit synfacially coordinate through a (μ-η(3)-allyl):(η(3)-allyl) manner. A trinuclear adduct of COT exhibited an unusual bonding structure in which a formally tetraanionic COT coordinates to three Pd(II) centers through a synfacial η(3):η(1):η(3):η(1) coordination mode. The tetraanionic COT ligand bearing three Pd(II) moieties undergoes a unique intramolecular 1,5-C-C coupling.
ISSN:1477-9226
1477-9234
DOI:10.1039/c3dt51018b