Citation:
SONG Li-Mei, GAO Jian-Hua. Synthesis, Crystal Structure and Photoluminescence of Ethyl Coumarin-3-carboxylate Derivatives[J]. Chinese Journal of Structural Chemistry,
2014, 33(1): 57-64.
Synthesis, Crystal Structure and Photoluminescence of Ethyl Coumarin-3-carboxylate Derivatives
摘要:
The ethyl coumarin-3-carboxylate (1) and its two derivatives, ethyl 7-methoxy-2-oxo-2H-chromene-3-carboxylate (2) and ethyl 7-(3-methylbut-2-enyloxy)-2-oxo-2H-chromene-3-carboxylate(3), were synthesized, characterized and their UV-vis spectra and photoluminescence were investigated. Compound 2 crystallizes in the monoclinic system with space group C2/c, a=25.884(4), b=6.8365(11), c=13.816(2) Å, β=104.876(2)°, V=2362.9(7) Å3, Z=8, Dc=1.396 g/cm3, Mr=248.23, F(000)=1040 and μ=0.108 mm-1. Compound 3 crystallizes in the monoclinic system with space group P21/c, a=15.685(6), b=8.373(3), c=13.063(5) Å, β=111.862(6)°, V=1592.2(10) Å3, Z=4, Dc=1.261 g/cm3, Mr=302.31, F(000)=640 and μ=0.093 mm-1. Both the absorption and emission of the two derivatives were stronger than that of ethyl coumarin-3-carboxylate due to the larger conjugation of their electron donor group moiety at the 7-position. Under ultraviolet light excitation, the two derivatives exhibit strong blue-violet emission.
English
Synthesis, Crystal Structure and Photoluminescence of Ethyl Coumarin-3-carboxylate Derivatives
Abstract:
The ethyl coumarin-3-carboxylate (1) and its two derivatives, ethyl 7-methoxy-2-oxo-2H-chromene-3-carboxylate (2) and ethyl 7-(3-methylbut-2-enyloxy)-2-oxo-2H-chromene-3-carboxylate(3), were synthesized, characterized and their UV-vis spectra and photoluminescence were investigated. Compound 2 crystallizes in the monoclinic system with space group C2/c, a=25.884(4), b=6.8365(11), c=13.816(2) Å, β=104.876(2)°, V=2362.9(7) Å3, Z=8, Dc=1.396 g/cm3, Mr=248.23, F(000)=1040 and μ=0.108 mm-1. Compound 3 crystallizes in the monoclinic system with space group P21/c, a=15.685(6), b=8.373(3), c=13.063(5) Å, β=111.862(6)°, V=1592.2(10) Å3, Z=4, Dc=1.261 g/cm3, Mr=302.31, F(000)=640 and μ=0.093 mm-1. Both the absorption and emission of the two derivatives were stronger than that of ethyl coumarin-3-carboxylate due to the larger conjugation of their electron donor group moiety at the 7-position. Under ultraviolet light excitation, the two derivatives exhibit strong blue-violet emission.
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Key words:
- coumarin derivatives
- / crystal structure
- / UV-vis spectrum
- / photoluminescence
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