Synthesis, structures, luminescent and magnetic properties of four coordination polymers based on biphenyl-2,4′,5-tricarboxylic acid and different N-donor ligands

•Synthesis of four new coordination polymers based on biphenyl-2,4′,5-tricarboxylic acid•Photoluminescence properties of 1 and magnetic properties of 2–4 have been studied.•Zn(II) and Co(II) ions are easily to construct isostructural coordination polymers in specific conditions.

Four new coordination polymers [Zn(HL)(bibp)]n (1: H3L = biphenyl-2,4′,5-tricarboxylic acid, bibp = 4,4′-bis(imidazolyl)biphenyl), [Co(HL)(bibp)]n (2), [Co(HL)(bib)]n·4nH2O (3: bib = 1,4-bis(1-imidazoly)-benzene), [Co1.5(L)(bib)1.5(H2O)]n·3nH2O (4), have been synthesized under solvo/hydrothermal conditions, and have been fully characterized by single-crystal X-ray diffraction, powder X-ray diffraction (PXRD), IR spectra, elemental analysis and thermogravimetric analysis (TGA). Structural analyses reveal that both 1 and 2 display a 4-fold interpenetrated framework. Complex 3 possesses a 2D (4,4) network. Complex 4 exhibits a 3D framework with the point symbol of {32·4·67}2{32·610·72·8}. Moreover, photoluminescence properties of 1 and magnetic properties of 2–4 have also been studied in detail.

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