Solvent-dependent 44 square grid and 64.82 NbO frameworks formed by Cu(Pyac)2 (bis[3-(4-pyridyl)pentane-2,4-dionato]copper(ii))Electronic supplementary information (ESI) available: microanalyses of 1, 2, 6 and 10. See http://www.rsc.org/suppdata/cc/b3/b305457h/

Abstract

The title compound crystallizes from anhydrous solvents in a simple square-grid topology, but when water is present, crystals form with an unusual interpenetrated 3D NbO topology whose pores contain hydrogen-bonded solvent molecules.