Discrete sandwich compounds of monolayer palladium sheets.
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.
Murahashi
Tetsuro
T
Department of Applied Chemistry, Graduate School of Engineering, Osaka University, and PRESTO, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan. tetsu@chem.eng.osaka-u.ac.jp
Fujimoto
Mayu
M
Oka
Masa-Aki
MA
Hashimoto
Yasuhiro
Y
Uemura
Tomohito
T
Tatsumi
Yasuki
Y
Nakao
Yoshihide
Y
Ikeda
Atsushi
A
Sakaki
Shigeyoshi
S
Kurosawa
Hideo
H