Accessing the inaccessible: discrete multinuclear coordination complexes and selective anion binding attainable only by tethering ligands together.

Abstract

Novel multimetallic copper pyrazolate complexes, inaccessible using simple pyrazole ligands due to competing, alternative structural motifs, can be obtained by locking pairs of pyrazole ligands together with ethylene tethers. Nanojars based on this tethered pyrazole ligand display unexpected total selectivity for the carbonate over the sulfate ion.