Structure, Growth and Characterization of Ammonium 5-Sulfosalicylic Acid Monohydrate Crystal

【摘要】 Ammonium 5-sulfosalicylic acid monohydrate(NH4·C7H5O6S·H2O, ASSA) was synthesized and optical grade crystal with dimensions of 45 mm × 20 mm × 18 mm was obtained from aqueous solution by the cooling solution method. The crystal structure was confirmed by X-ray single-crystal diffraction method and the empirical composition is C7H11NO7 S with formula weight 253.23. The crystal belongs to monoclinic space group P21/c with a = 11.884(9), b = 7.306(5), c = 12.152(9) , β= 104.851(13)°, V = 1019.8(13) 3, Z = 4, Dc = 1.649 g/cm3, μ = 0.340 mm-1, F(000) = 528, the final R = 0.0307 and w R = 0.0866 for 7494 observed reflections(Ⅰ > 2δ(Ⅰ)). Elemental analysis, IR and 1H-NMR spectrum were used to characterize the compound. Thermal analysis showed that one coordination water molecule was contained and dehydration temperature of ASSA crystal was 106℃. Optical transmission and fluorescence spectrum revealed that the ASSA crystal exhibited a strong absorption in ultraviolet region with the sharp absorption edge located at 340 nm and a significant blue fluorescent emission band at 442 nm.更多还原

【Abstract】 Ammonium 5-sulfosalicylic acid monohydrate(NH4·C7H5O6S·H2O, ASSA) was synthesized and optical grade crystal with dimensions of 45 mm × 20 mm × 18 mm was obtained from aqueous solution by the cooling solution method. The crystal structure was confirmed by X-ray single-crystal diffraction method and the empirical composition is C7H11NO7 S with formula weight 253.23. The crystal belongs to monoclinic space group P21/c with a = 11.884(9), b = 7.306(5), c = 12.152(9) , β= 104.851(13)°, V = 1019.8(13) 3, Z = 4, Dc = 1.649 g/cm3, μ = 0.340 mm-1, F(000) = 528, the final R = 0.0307 and w R = 0.0866 for 7494 observed reflections(Ⅰ > 2δ(Ⅰ)). Elemental analysis, IR and 1H-NMR spectrum were used to characterize the compound. Thermal analysis showed that one coordination water molecule was contained and dehydration temperature of ASSA crystal was 106℃. Optical transmission and fluorescence spectrum revealed that the ASSA crystal exhibited a strong absorption in ultraviolet region with the sharp absorption edge located at 340 nm and a significant blue fluorescent emission band at 442 nm.更多还原