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

1 Citation (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

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Dihedral angle
Polymorphism
Conformations
rings
Boats
Crystal structure
dihedral angle
boats
1-desamino-(O-Et-Tyr)(2)-oxytocin
envelopes
crystal structure

All Science Journal Classification (ASJC) codes

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

Cite this

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title = "An ortho-rhom-bic polymorph of 6-de-oxy-6-iodo-1,2: 3,4-di-O-isopropyl-idene - D-galactopyran-oside",
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.",
author = "Fun, {Hoong Kun} and Liew, {Wei Ching} and Sankappa Rai and Prakash Shetty and Isloor, {Arun M.}",
year = "2009",
month = "8",
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language = "English",
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publisher = "International Union of Crystallography",
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An ortho-rhom-bic polymorph of 6-de-oxy-6-iodo-1,2 : 3,4-di-O-isopropyl-idene - D-galactopyran-oside. / Fun, Hoong Kun; Liew, Wei Ching; Rai, Sankappa; Shetty, Prakash; Isloor, Arun M.

In: Acta Crystallographica Section E: Structure Reports Online, Vol. 65, No. 8, 20.08.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - An ortho-rhom-bic polymorph of 6-de-oxy-6-iodo-1,2

T2 - 3,4-di-O-isopropyl-idene - D-galactopyran-oside

AU - Fun, Hoong Kun

AU - Liew, Wei Ching

AU - Rai, Sankappa

AU - Shetty, Prakash

AU - Isloor, Arun M.

PY - 2009/8/20

Y1 - 2009/8/20

N2 - 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.

AB - 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.

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