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A novel coordination polymer [Eu2(C6H8O4)3(H2O)2]n?n(4,4?-bpy) (Mr = 928.51) was synthesized by the hydrothermal reaction of EuCl3?6H2O, adipic acid and 4,4?-bpy, and determined by elemental analysis, IR spectroscopy, thermal gravimetric analysis, single-crystal diffraction and fluorescence property. X-ray analysis reveals that a three-dimensional network has been formed between Eu3+ by carboxyl of adipic acid. The crystal is of orthorhombic, space group Pbcn with a = 21.870(7), b = 7.652(2), c = 19.624(6) ?, V = 3284.1(17) ?3, Z = 4, Dc = 1.878 g/cm3, μ = 3.854 mm-1, F(000) = 1824, R = 0.0345 and wR = 0.0565. The coordination polymer exhibits intensive red light under UV excitation at room temperature, which is attributed to the 5D0→7F2 transition of Eu(Ⅲ) ions.
A novel coordination polymer [Eu2 (C6H8O4) 3 (H2O) 2] n? N (4,4? -bpy) (Mr = 928.51) was synthesized by the hydrothermal reaction of EuCl3? 6H2O, adipic acid and 4,4? bpy, and determined by elemental analysis, IR spectroscopy, thermal gravimetric analysis, single-crystal diffraction and fluorescence property. X-ray analysis reveals that a three-dimensional network has been formed between Eu3 + by carboxyl of adipic acid. The crystal is of orthorhombic , space group Pbcn with a = 21.870 (7), b = 7.652 (2), c = 19.624 (6) ?, V = 3284.1 (17)? 3, Z = 4, Dc = 1.878 g / cm3, mm-1, F (000) = 1824, R = 0.0345 and wR = 0.0565. The coordination polymer exhibits intense red light under UV excitation at room temperature, which is attributed to the 5D0 → 7F2 transition of Eu (Ⅲ) ions.