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Synthesis and crystal structure of 7-ethoxyl-4′-hydroxyisoflavone

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Abstract

7-Ethoxyl-4′-hydroxyisoflavone was prepared and its crystal structure was examined by X-ray diffraction. Crystallization of the title compound occurs in the monoclinic, space group P2(1)/c with a = 11.144(2) Å, b = 10.209(1) Å, c = 13.191(2) Å, β = 113.43(1)∘ and Z = 4. The molecular structure of title compound consists of a benzopyranone moiety, a phenyl moiety, a hydroxyl and an ethoxyl group. The benzopyranone ring is not coplanar with the phenyl ring, the dihedral angle being 46.75∘. The ethoxyl group is nearly coplanar with its corresponding ring with the torsion angle 175.23(2)∘. Three kinds of hydrogen bond and two kinds of aromatic stacking interaction link the title compounds into a three-dimensional networking structure.

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Authors and Affiliations

  1. School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an, 710062, People’s Republic of China

    Zun-Ting Zhang, Qiu-Ya Wang & Yun He

  2. ChengDu Branch of Chinese Academy of Sciences ChengDu, 610041, People’s Republic of China

    Kai-Bai Yu

  3. Research Laboratory, School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an, 710062, People’s Republic of China

    Zun-Ting Zhang

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  1. Zun-Ting Zhang
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  2. Qiu-Ya Wang
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  3. Yun He
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  4. Kai-Bai Yu
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Correspondence to Zun-Ting Zhang.

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Zhang, ZT., Wang, QY., He, Y. et al. Synthesis and crystal structure of 7-ethoxyl-4′-hydroxyisoflavone. J Chem Crystallogr 35, 89–95 (2005). https://doi.org/10.1007/s10870-005-2795-2

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  • DOI: https://doi.org/10.1007/s10870-005-2795-2

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