An ortho-rhom-bic polymorph of 6-de-oxy-6-iodo-1,2: 3,4-di-O-isopropyl-idene - D-galactopyran-oside

Hoong Kun Fun, Wei Ching Liew, Sankappa Rai, Prakash Shetty, Arun M. Isloor

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The title compound, C12H19IO5, is the ortho-rhom-bic polymorph of a previously reported monoclinic form [Krajewski et al. (1987). Bull. Pol. Acad. Sci. Chem. 35, 91-102]. The dihedral angles between the six-membered ring and the two five-membered rings are 67.66 (14) and 71.79 (13)°, whereas the dihedral angle between the five-membered rings is 74.41 (12)°, indicating that all three rings are twisted from each other. The six-membered ring has a twist-boat conformation while both of the five-membered rings have envelope conformations. The crystal structure is stabilized by a network of C - H⋯O contacts linking the mol-ecules into a two-dimensional array parallel to the ab plane.

Original languageEnglish
JournalActa Crystallographica Section E: Structure Reports Online
Volume65
Issue number8
DOIs
Publication statusPublished - 20-08-2009

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Materials Science(all)
  • Chemistry(all)

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