Liang Xiao-lon
2015
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Journal
Journal of Guangxi Normal University
Abstract
Ethyl 5-acetamido-4-(4-chlorophenyl)-2-methyl-6-oxo-5,6-dihydro-4 H-pyran-3-carboxylate,C17H18ClNO5,has been synthesized and characterized by IR,NMR,MS and single-crystal X-ray diffraction.The crystal is of orthorhombic,space group Pbca with a=1.189 29(13)nm,b=0.968 44(10)nm,c=3.172 1(2)nm,V =3.653 5(6)nm3,Z=8,Mr=351.77,Dc=1.279 Mg/m3,λ=0.071 073 nm,μ(MoKα)=0.234mm-1,F(000)=1 472,the final R=0.098 5and wR=0.245 4for141 3observed reflections with I2σ(I).The N—H and oxygen atom are involved in intermolecular hydrogen bonds which link the molecules into an one-dimensional chain and stabilize the structure.