Gold center dot center dot center dot pi aryl interactions as supramolecular synthons

作者：Tiekink Edward R T^*; Zukerman Schpector Julio

来源：CrystEngComm, 2009, 11(7): 1176-1186.

DOI：10.1039/b901576k

Au center dot center dot center dot p interactions whereby the electron-rich pi-system of C(6)-aromatic rings interact with gold are shown to exist in the crystal structures of both gold(I) and gold(III) complexes, and have been revealed to occur between neutral/neutral, cationic/cationic, and cationic/anionic systems. Supramolecular aggregation facilitated by Au center dot center dot center dot p interactions leads to the formation of 0-dimensional aggregates, e. g. arising from an interaction between a gold complex and a solvent molecule, loosely associated spherical aggregates, e. g. cooperative interactions between centrosymmetrically related gold complexes, and even extended supramolecular polymeric chains of variable topology (e. g. linear, step ladder, and helical). The described Au center dot center dot center dot pi interactions represent a new synthon in structural gold chemistry that should be considered in any complete analysis of their crystal structures.

• 出版日期2009