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.