Axial extension of trinickel string complex by 1,4-benzenedicarboxylate: synthesis, structure, and magnetism of {[Ni_3(dpa)_4(1,4-bdc)] · 0.5H_2O]}_n

摘要

The reaction of [Ni3(dpa)_4(ClO_4)_2] with 1,4-benzenedicarboxylate through diffusion of layered-solution led to the precipitation of 1, {[Ni_3(dpa)_4(1,4-bdc)] ·0.5H_2O]}_n, where dpa~- is 2,2'-dipyridylamido anion, which was characterized by IR, elemental analysis, MS, fluorescence spectrum, TG analysis, and magnetic measurement. Extension of the metal string complex by assembly of [Ni~3(dpa)_4]~(2+) and 1,4-bdc2- gives a 1-D polymeric structure, in which the axial l,4-bdc~(2-) influences the Ni ··· Ni distances, fluorescence emission, and magnetism.