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, cilt.51, ss.1880-1883, 1995 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 51
  • Basım Tarihi: 1995
  • Doi Numarası: 10.1107/s0108270195002940
  • Dergi Adı: ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Academic Search Premier, Aerospace Database, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1880-1883
  • Hacettepe Üniversitesi Adresli: Evet

Özet

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.