Two new Zn(II)/Co(II) coordination polymer constructed by same Bis-imidazole and different dicarboxylate as co-ligands: syntheses, crystal structure and photocatalytic activity

Abstract Two coordination polymers, {[Zn(1,3-BIP)(1,4-BDF)]·H 2 O} n (1), {[Co(1,3-BIP)(1,3-BDC)]·3H 2 O} n (2). (1,3-BIP is 1,3-bis(imidazole)propane, 1,3-BDC is 1,3-Benzenedicarboxylic acid and 1,4-BDF is 2,3,5,6-tetrafluoroterephthalic acid) were prepared under solvothermal conditions and characterized by IR spectra, thermogravimetric analyses, elemental analyses, powder and single-crystal X-ray diffraction analyses. The single-crystal X-ray diffraction analyses indicated that complex 1 and complex 2 show a two-dimensional sheet layer structure, which are reinforced through strong intermolecular hydrogen bonding to form a 3D supramolecular framework. Additionally, complex 1 exhibited photocatalytic property for the degradation of rhodamine B (Rh B) under UV light irradiation in solution. The photocatalytic performance was up to 75 % within 270 min without any other reagents.