Coupling photo-, mechano- and thermochromism and single-ion-magnetism of two mononuclear dysprosium–anthracene–phosphonate complexes†
Abstract
DyIII(depma)3(NO3)3 (1) and DyIII(depma)4(NO3)2(CF3SO3) (2) differ structurally by the number of depma ligands and the supramolecular interactions (π–π and C–H⋯π, respectively) between anthracene moieties. They exhibit single-ion-magnetism which is coupled to photo- and mechanochromism that are partially reversible by thermal annealing. The changes are associated with the formation and destruction of excimers.