Synthesis, characterization, optical and electrochemical performances of 3-fold interpenetrated Copper(II) coordination polymer with a flexible zwitterionic ligand

Abstract

A new Cu(II)-coordination polymer, formulated as {[CuCl(mu(4)-bipna)](NO3)center dot 2.5H(2)O}(n) (1) ((H(2)bipna)Br-2: 1,1'-([1,1 '-biphenyl]-4,4 '-diylbis (methylene))bis (3-carboxypyridin-1-ium) bromide) was synthesized and characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction technique. The single crystal X-ray diffraction analysis revealed that compound 1 exhibited a 2D -> 2D polycatenane of 3-fold interpenetrated sql layers. The electrochemical performance of 1 was performed both as anode and cathode for Li-ion batteries. In both situations, the capacity values remained around 20-40 mAhg(-1) independent of type of the electrodes. In addition, the thermal and optical properties of compound 1 were investigated.