Crystal structure and Hirshfeld surface analysis of mono/bis(aqua-κ<i>O</i>)[<i>N</i>-(2-oxidobenzylidene)valinato-κ<sup>3</sup> <i>O</i>,<i>N</i>,<i>O</i>′]copper(II): dimeric Schiff base copper(II) complexes having different numbers of coordinated water molecules
Acta crystallographica. Section E, Crystallographic communications