Imaging Science and Photochemistry ›› 2008, Vol. 26 ›› Issue (5): 393-402.DOI: 10.7517/j.issn.1674-0475.2008.05.393

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Synthesis and Structure Characterization of Coumarin Derivatives

SUN Yi-feng1, MA Shi-ying1, ZHANG Dong-di2, CHENG Xue-li1   

  1. 1. Department of Chemistry, Taishan University, Taian 271021, Shandong, P. R. China;
    2. College of Pharmacy, Henan University, kaifeng 475002, Henan, P. R. China
  • Received:2008-01-02 Revised:2008-03-13 Online:2008-09-23 Published:2008-09-23

Abstract: Eleven new coumarin derivatives were prepared in 53% to 79% yields.The structures of the title compounds were characterized by elemental analysis,1HNMR and MS.The crystal structure of donor-acceptor complex ABT-MCC derived from 2-amino-1,3-benzothiazole(ABT) and ethyl 8-mthoxycoumarin-3-carboxylate(MCC) was determined by X-ray diffraction analysis.The crystal of ABT-MCC belongs to the triclinic system,space group P1,cell parameters: a=9.5978(19)Å,b=10.686(2)Å,c=10.693(2)Å,α=71.30(3)°,β=70.43(3)°,γ=88.99(3) °,V=973.9(3)Å3,Z=2,Dx=1.359 mg/m3,μ=0.200 mm-1,F(000)=416,R=0.0463, wR=0.0992.X-ray diffraction reveals that the complex shows the A…D…D’…A’ H-bonded tetramer.The molecules are connected via intermolecular hydrogen bonds into a one-dimensional chain structure,and are further assembled to form a layer structure via the π-π stacking.

Key words: coumarin derivatives, 2-aminobenzothiazole, donor-acceptor complex, synthesis, crystal structure

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