Effects on molecular association, chelate conformation, and reactivity toward substitution in copper Cu(5-X-salen) complexes, salen2- = N,N'-ethylenebis(salicylidenaminato), X = H, CH3O, and Cl: synthesis, x-ray structures, and EPR investigations

Three copper(II) complexes, Cu(5-X-salen), where salen 2- = N,N'-ethylenebis(salicylidenaminato) and X=H (1), CH 3 O (2), or Cl (3), have been synthesized and characterized by various physicochemical techniques