7-HYDROXYFLAVANONE(I) AND 7-ETHOXY-CARBONYLMETHOXYFLAVANONE(II)


KENDI E., OZBEY S. , ERTAN R., FUN H., YIP B.

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, vol.51, pp.1880-1883, 1995 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 51
  • Publication Date: 1995
  • Doi Number: 10.1107/s0108270195002940
  • Title of Journal : ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
  • Page Numbers: pp.1880-1883

Abstract

The gamma-pyrone rings in both of the title molecules, 2,3-dihydro-7-hydroxy-2-phenyl-4H- 1-benzopyran-4-one, C15H12O3, (I), and ethyl (2,3-dihydro-2-phenyl-4-oxo-4H-1-benzopyran-7-yl)oxyacetate, C19H18O5, (II), adopt a C(2)-sofa conformation. In (I), the phenyl ring is twisted 103.0 (1)degrees from the plane of the fused rings and the hydroxy group at C(7) forms an intermolecular hydrogen bond to O(4) of the adjacent molecule. In (II), the phenyl ring is twisted 121.5 (2)degrees from the plane of the fused rings and the acetyl group is oriented slightly out of the plane of the benzene ring.