Selective synthesis of ruthenium(II) Metalla[2]catenane via solvent and guest-dependent self-assembly

J Am Chem Soc. 2015 Apr 15;137(14):4674-7. doi: 10.1021/jacs.5b02573. Epub 2015 Apr 2.

Abstract

The coordination-driven self-assembly of an anthracene-functionalized ditopic pyridyl donor and a tetracene-based dinuclear Ru(II) acceptor resulted in an interlocked metalla[2]catenane, [M2L2]2, in methanol and a corresponding monorectangle, [M2L2], in nitromethane. Subsequently, guest template, solvent, and concentration effects allowed the self-assembly to be reversibly fine-tuned among monorectangle and catenane structures.