3-Ethyl-3,4,4a, 10a-tetrahydro-2H- 1,5-dioxa-3-aza-phenanthren-6-one （C13H13NO3, Mr = 231.24） was synthesized and characterized by FT-IR, H NMR spectra, and thermal analysis. The crystal structure was determined by ...3-Ethyl-3,4,4a, 10a-tetrahydro-2H- 1,5-dioxa-3-aza-phenanthren-6-one （C13H13NO3, Mr = 231.24） was synthesized and characterized by FT-IR, H NMR spectra, and thermal analysis. The crystal structure was determined by X-ray single-crystal diffraction. It crystallizes in methanol. The crystal is of orthorhombic system, space group Pbca with a = 8.9250（18）, b = 12.605（3）, c = 20.552（4） A, Z = 8, V = 2312.1（8） A3, Dc = 1.329 mg/m3, p = 0.095 mm-, F（000） = 976, R = 0.0583 and wR = 0.1340. Thermal analysis reveals that it is stable below 100 C. Fluorescence spectra analysis shows that its fluorescence intensity is twice as that of 7-hydroxylcoumarin in methanol solution with the same concentration.展开更多
文摘3-Ethyl-3,4,4a, 10a-tetrahydro-2H- 1,5-dioxa-3-aza-phenanthren-6-one （C13H13NO3, Mr = 231.24） was synthesized and characterized by FT-IR, H NMR spectra, and thermal analysis. The crystal structure was determined by X-ray single-crystal diffraction. It crystallizes in methanol. The crystal is of orthorhombic system, space group Pbca with a = 8.9250（18）, b = 12.605（3）, c = 20.552（4） A, Z = 8, V = 2312.1（8） A3, Dc = 1.329 mg/m3, p = 0.095 mm-, F（000） = 976, R = 0.0583 and wR = 0.1340. Thermal analysis reveals that it is stable below 100 C. Fluorescence spectra analysis shows that its fluorescence intensity is twice as that of 7-hydroxylcoumarin in methanol solution with the same concentration.
