4-氨基安替比林希夫碱的合成、晶体结构及其荧光性质研究

Study on Synthesis, Crystal Structure and Fluorescence Properties of Schiff Base from 4-Aminoantipyrine

摘要: 合成了水杨醛缩4-氨基安替比林希夫碱，通过红外光谱仪、核磁共振仪、元素分析仪、单晶X-衍射仪对产物的结构进行了表征，并对其与五种金属离子作用时的荧光性质进行了检测。结果表明：该希夫碱晶体属于单斜晶系，空间群为P2(1)/n，晶胞参数a = 0.7603 nm，b = 0.7508 nm，c = 2.7246 nm，α = 90.00˚，β = 95.43˚，γ = 90.00˚。V = 1.548 nm³，Z = 4，Dc = 1.314 g/cm3，μ = 0.088 mm⁻¹，F(000) = 648，ρmax = 218 e∙nm⁻³，ρmin = −155 e∙nm⁻³。该希夫碱与金属作用后，在676 nm (λmax)具有较强的荧光吸收，其中Cu²⁺和Co²⁺所产生的荧光增强效应显著。

Abstract: The title compound Schiff base was synthesized from salicylaldehyde and 4-aminoantipyrine. Its structure was characterized by IR, 1H NMR, Elemental Analyzer and X-ray single-crystal diffraction. Fluorescent property about the title compound complexed with five kinds of metal ions was investigated. The results show that the compound crystallizes in the monoclinic space group P2(1)/n with cell parameters: a = 0.7603 nm, b = 0.7508 nm, c = 2.7246 nm, α = 90.00˚, β= 95.43˚, γ = 90.00˚. V = 1.548 nm3, Z = 4, Dc = 1.314 g/cm3, μ = 0.088 mm⁻¹, F(000) = 648, ρmax = 218 e∙nm⁻³, ρmin = −155 e∙nm⁻³. The complexes exhibited strong fluorescence absorption at 676 nm (λmax). Fluorescence enhancement effect produced by Cu²⁺, Co²⁺ is remarkable.