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Discrete Sandwich Compounds of Monolayer Palladium Sheets

Tetsuro Murahashi, Mayu Fujimoto, Masa-aki Oka, Yasuhiro Hashimoto, Tomohito Uemura, Yasuki Tatsumi, Yoshihide Nakao, Atsushi Ikeda, Shigeyoshi Sakaki and Hideo Kurosawa
Science
New Series, Vol. 313, No. 5790, Freshwater Resources (Aug. 25, 2006), pp. 1104-1107
Stable URL: http://www.jstor.org/stable/3847080
Page Count: 4
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Abstract

Despite the abundance of "sandwich" complexes, in which two cyclic aromatic hydrocarbon ligands flank a metal center, this motif has not been extended to sheets of multiple metal atoms. We prepared and isolated two such compounds. In the first, three palladium centers form a planar triangular array, capped by chlorides, between two cycloheptatrienyl ligands. In the second, a pentapalladium sheet adopts an edge-sharing triangle-trapezoid skeleton between two naphthacene rings. The compounds were characterized by x-ray crystallography and nuclear magnetic resonance spectroscopy. The nature of bonding in the clusters was analyzed by quantum calculations.

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