Synthesis, Structure and Fluorescence Spectrum Studies of Bromocoumarin Derivants: C19H22BrNO6

Ying Wang; Xiao Dong Liu; Zhuo Liu

doi:10.4028/www.scientific.net/AMR.396-398.1864

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Synthesis, Structure and Fluorescence Spectrum Studies of Bromocoumarin Derivants: C₁₉H₂₂BrNO₆
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Synthesis, Structure and Fluorescence Spectrum Studies of Bromocoumarin Derivants: C₁₉H₂₂BrNO₆

Abstract:

The title compound has been prepared and characterized by P1PHNMR, FT-IR, fluorescence spectrum and thermal analysis. The crystal and molecular structures of dimethyl-(4-(7-acetoxyl-2H -chromen-2-one))-methyl-(2-acrylate)-ethyl-ammonium bromide were determined by X-ray diffraction methods. The compound crystallizes in Monoclinic system, space group C2/c, with lattice parameters a = 22.799(5), b =12.122(2), c =14.580(3) Å, β = 90.76(3)°, Mr = 440.29, V = 4029.1(14) ÅP3P, Z = 8, Dc= 1.452 g/cmP3P, F(000) = 1808, R = 0.0679 and wR = 0.1450. In the structure, The four N-C bond distances are in the range of 1.473(6) ~ 1.531(6) Å. The P1PHNMR and FT-IR data are in agreement with the structural data. The title compound also shows good fluorescent behaviors. The fluorescent intensity changed little at pH ranging from 7.5 to 9.5. The pH value of the circulation cooling water is in this range so that the title compound can be used in tracer detection.