A new two-dimensional Co II coordination polymer based on bis[4-(2-methyl-1H-imidazol-1-yl)phenyl] ether and biphenyl-4,4'-diyldicarboxylic acid: synthesis, crystal structure and photocatalytic degradation activity.

A novel two-dimensional CoII coordination framework, namely poly[(μ2 -biphenyl-4,4'-diyldicarboxylato-κ2 O4 :O4' ){μ2 -bis[4-(2-methyl-1H-imidazol-1-yl)phenyl] ether-κ2 N3 :N3' }cobalt(II)], [Co(C14 H8 O4 )(C20 H18 N4 O)]n , has been prepared and characterized by IR, elemental analysis, thermal analysis and single-crystal X-ray diffraction. The crystal structure reveals that the compound has an achiral two-dimensional layered structure based on opposite-handed helical chains. In addition, it exhibits significant photocatalytic degradation activity for the degradation of methylene blue.