Hydrothermal synthesis, crystal structure and luminescence of a iron coordination polymer with terephthalate and o-phenanthroline

A new coordination polymer [Fe(phen)(bdc)(H2O)](n) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, UV-Vis, TG and single crystal X-ray diffraction analysis. It crystallizes in triclinic, space group P (1) over bar, C20H14N2FeO5, with a=0.9308 (6) nm, b=1.022 6 (7) nm, c=1.134 1 (5) nm, alpha= 112.790(15)degrees, beta=94.720(14)degrees, gamma=113.417(10)degrees, V=0.876 9(9) nm(3), Z=2, the final R-1=0.0346, wR(2)=0.078 8. The Fe(II) is coordinated with two nitrogen atoms and three oxygen atoms making a highly distorted trigonal bipyramidal. A 1D chain structure is constructed and further extended into a 3D structure through O-H center dot center dot center dot O intermolecular hydrogen bonding interactions. The polymer shows a fluorescence-emission at around 368 nm. CCDC: 894820.