Anion-controlled self-assembly of two NLO-active dinuclear and molecular square Cu(ii) enantiomeric pairs: from antiferromagnetic to ferromagnetic coupling†
Abstract
Two second-order nonlinear optically (NLO)-active dinuclear and square Cu(II) enantiomeric pairs were obtained via the self-assemblies of enantiopure linear bis-bidentate ligands with different copper(II) salts under the identical reaction conditions. Their magnetic properties are switched from antiferromagnetic to ferromagnetic coupling.