A new coordination polymer {[Ba(L)(H2O)5]·H2O}n (1, H2L = 3,3΄-((((ethane-1,2- diylbis(oxy))-bis(2,1-phenylene))bis(methylene))bis(oxy))dibenzoic acid) has been synthesized under evaporation process and characterized by elemental analysis, IR spectra, TG analysis, fluorescence spectrum, powder X-ray diffraction analysis and single-crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic system, space group P21/c, with a = 20.918(5), b = 7.4539(2), c = 20.168(5) Å, = 95.486(2)º, V = 3130.1(1) Å3, Z = 4, C30H34BaO14, Mr = 755.91, Dc = 1.604 g/cm3, F(000) = 1528, µ = 1.34 mm-1, the final R = 0.0404 and wR = 0.0676 for all data. Single-crystal X-ray structural reveals that the Ba(II) ion adopts a nine-coordinated distorted tricapped trigonal prism coordination geometry. Adjacent Ba(II) ions are linked by one µ2-L2- anion and two (µ2-H2O) water molecules to generate an infinite 1D zigzag chain structure. Then these chains are further linked into a 2D layer supramolecular architecture through O–H···O hydrogen bonds. Luminescent property and thermal stability of complex 1 were investigated.
Abstract:.A new coordination polymer {[Ba(L)(H2O)5]·H2O}n (1, H2L = 3,3΄-((((ethane-1,2- diylbis(oxy))-bis(2,1-phenylene))bis(methylene))bis(oxy))dibenzoic acid) has been synthesized under evaporation process and characterized by elemental analysis, IR spectra, TG analysis, fluorescence spectrum, powder X-ray diffraction analysis and single-crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic system, space group P21/c, with a = 20.918(5), b = 7.4539(2), c = 20.168(5) Å, = 95.486(2)º, V = 3130.1(1) Å3, Z = 4, C30H34BaO14, Mr = 755.91, Dc = 1.604 g/cm3, F(000) = 1528, µ = 1.34 mm-1, the final R = 0.0404 and wR = 0.0676 for all data. Single-crystal X-ray structural reveals that the Ba(II) ion adopts a nine-coordinated distorted tricapped trigonal prism coordination geometry. Adjacent Ba(II) ions are linked by one µ2-L2- anion and two (µ2-H2O) water molecules to generate an infinite 1D zigzag chain structure. Then these chains are further linked into a 2D layer supramolecular architecture through O–H···O hydrogen bonds. Luminescent property and thermal stability of complex 1 were investigated.
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