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设计合成了5个新的双香豆素-3-酰胺衍生物,并用IR,NMR,MS和元素分析进行结构表征.用X射线单晶衍射法测定了N,N′1,3-苯基二-(7-二乙氨基-3-甲酰胺)香豆素(4)的晶体结构,化合物4属于三斜晶系,P-1空间群,晶胞参数a=0.8269(14)nm,b=1.4301(3)nm,c=2.5533(4)nm,α=82.55(4)。,β=86.09(5)。,γ=79.05(1)°,V=2.9367(3)nm~3,D_c=1.345 g·cm~(-3),Z=2,F(000)=1256,μ=0.093 mm~(-1),最终偏离因子R_1=0.0622,wR_2=0.1410.研究了它们的紫外和荧光性质,结果表明:紫外吸收光谱均呈双峰结构,化合物最大吸收波长在418～441 nm的可见光区域,化合物的荧光发射峰在450～460 nm之间;化合物具有高的荧光量子产率,荧光量子产率为0.56～0.65.
Five novel dicoumarin-3-carboxamide derivatives were designed and synthesized, and their structures were characterized by IR, NMR, MS and elemental analysis.N, N’1,3-Phenyl Compound 4 belongs to the triclinic system, P-1 space group, the unit cell parameters a = 0.8269 (14) nm, b = 1.4301 (3) nm, c = 2.5533 (4) nm, α = 82.55 (4). , β = 86.09 (5). , γ = 79.05 (1) °, V = 2.9367 (3) nm ~ 3, D_c = 1.345 g · cm -3, Z = 2, F ), The final deviation factor R_1 = 0.0622, wR_2 = 0.1410. The UV and fluorescence properties of the compounds were studied. The results showed that the UV absorption spectra showed a bimodal structure and the maximum absorption wavelength was in the range of 418 ~ 441 nm. The fluorescence of the compound The emission peak is between 450 and 460 nm. The compound has a high fluorescence quantum yield of 0.56 ~ 0.65.