Syntheses, Crystal Structures and Characterization of Two New Pb(II) and Cu(II) Coordination Polymers Based on 2-(4-Fluorophenyl)-1H- imidazo[4,5-f][1,10]phenanthroline and Benzenedicarboxylate Ligands
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چکیده
Two new coordination polymers, [Pb(L)(1,3-bdc)] ·2.5H2O (1) and [Cu(L)(1,4-bdc)] (2) (L = 2(4-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline; 1,3-bdc, 1,4-bdc = 1,3and 1,4-benzenedicarboxylate), have been hydrothermally synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. Crystal data for 1: C54H40F2N8O13Pb2, triclinic, space group P1̄, a = 9.3468(19), b = 9.4607(14), c = 15.581(3) Å, α = 90.44(4), β = 101.13(3), γ = 113.97(3)◦, V = 1229.6(4) Å3, Z = 1. Crystal data for 2: C27H15CuFN4O4, triclinic, space group P1̄, a = 9.640(6), b = 10.941(8), c = 11.865(5) Å, α = 62.694(4), β = 69.776(3), γ = 79.915(5)◦ , V = 1043.2(11) Å3, Z = 2. In 1, the Pb(II) atoms are bridged by the 1,3-bdc ligands to yield a chain structure. The ligands L are only located on one side of the chain, where π · · ·π interactions among neighboring chains result in a supramolecular ladder, and the O–H· · ·O hydrogen bonding interactions further stabilize this structure. Compound 2 shows a layer structure, with stacking by π-π interactions to give a three-dimensional (3D) supramolecular architecture. N–H· · ·O hydrogen bonding further stabilizes the structure of 2.
منابع مشابه
Syntheses, Structures and Characterization of Two Ni(II) and Pb(II) Coordination Polymers Constructed by 2-(4-Fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline and Flexible 4,4'-Oxybis(benzoate) Ligands
Two coordination polymers, [Ni(H2O)(L)(OBA)] (1) and [Pb(L)2(OBA)]·3H2O (2) [L = 2(4-fluorophenyl)-1H-imidazo[4,5f ][1,10]phenanthroline and OBA = 4,4’-oxybis(benzoate)], have been synthesized under hydrothermal conditions, and characterized by elemental analysis, and IR and UV/Vis spectra. Crystal data for 1: C33H21FN4NiO6, triclinic, space group P1̄, a = 13.8490(10), b = 14.932(2), c = 14.993(...
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