Zero/one-dimensional coordination complexes constructed from the carboxylate and multi-nitrogen chelating ligands: structural insights and photocatalytic degradation of organic dye

Abstract

In the current study, two new coordination complexes with the chemical formulae of [Co(cbba)(bimb)](H₂O) (1, H₂cbba = 3-((3-carboxybenzyl)oxy)benzoic acid, bimb = 6,6′-bis(1H-benzo[d]imidazol-2-yl)-2,2’-bipyridine) and {[Co(pdc)(bimb)](DMF)}_n (2, H₂pda = pyrazine-2,5-dicarboxylic acid) have been successfully prepared by reaction of the Co(NO₃)₂·6H₂O with the bimb ligand in the presence of different carboxylate ligands (H₂cbba for 1 and H₂pda for 2). The as-prepared two complexes have been determined via the elemental analysis, single crystal X-ray diffraction along with the powder X-ray diffraction. In addition, the photocatalytic activity of complex 2 toward the degradation of methyl violet (MV) in simulated polluted water was explored.

Keywords:

• Coordination complex
• mixed-ligand
• N-chelating ligand
• photocatalytic dye degradation