Design, synthesis, and crystallographic studies of neutral platinum-based macrocycles formed via self-assembly.

Partha Sarathi Mukherjee, Neeladri Das, Yury K Kryschenko, Atta M Arif, Peter J Stang

Index: J. Am. Chem. Soc. 126(8) , 2464-73, (2004)

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Abstract

A series of neutral, platinum-based macrocycles was synthesized from rigid oxygen donor building blocks via self-assembly. The combination of a platinum-based 60 degrees acceptor unit 1 with several linear and angular dicarboxylate bridging ligands afforded hitherto unknown neutral platinum-based supramolecular triangles and rhomboids. In addition, a similar reaction of the diplatinum molecular clip 6 and three different linear dicarboxylates led to the formation of neutral molecular rectangles. Most of the macrocycles were characterized by X-ray single-crystal structure analysis, and, in all cases, NMR spectra were consistent with the formation of single highly symmetrical species.