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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
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1,10,10-Trimethyl-5-phenyl-3-oxa-4-aza-tri-cyclo-[5.2.1.0(2,6)]dec-4-en-2-ol.

Brahim Boualy1, Mohamed Anouar Harrad, Abdelghani Oudahmane

  • 1Laboratoire de Chimie de Coordination, Faculté des Sciences-Semlalia, BP 2390, 40001 Marrakech, Morocco.

Acta Crystallographica. Section E, Structure Reports Online
|October 11, 2013
PubMed
Summary

Researchers synthesized a novel compound C17H21NO2 from benzyl-camphor and hydroxyl-amine. Structural analysis revealed specific ring conformations and intermolecular hydrogen bonding in the crystal lattice.

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Area of Science:

  • Organic Chemistry
  • Crystallography
  • Molecular Structure

Background:

  • Camphor derivatives are valuable in synthetic chemistry.
  • Understanding molecular conformation is crucial for predicting chemical properties.
  • Hydrogen bonding influences crystal packing and material properties.

Purpose of the Study:

  • To synthesize and characterize a novel organic compound.
  • To elucidate the three-dimensional structure of the synthesized molecule.
  • To investigate intermolecular interactions in the solid state.

Main Methods:

  • Chemical synthesis involving (1R)-(+)-3-benzyl-camphor and hydroxyl-amine.
  • X-ray crystallography for detailed structural determination.
  • Analysis of bond angles, dihedral angles, and hydrogen bonding patterns.

Main Results:

  • Successful synthesis of the title compound C17H21NO2.
  • The oxazole ring exhibits a dihedral angle of 23.42° relative to the phenyl ring.
  • The norboryl group displays a boat conformation for the six-membered ring and flattened envelope conformations for the five-membered rings.
  • Molecules form zigzag chains via O-H⋯N hydrogen bonds in the crystal.

Conclusions:

  • The study provides a detailed structural characterization of a novel camphor derivative.
  • The observed conformations and hydrogen bonding are key features of the crystal structure.
  • This work contributes to the understanding of structure-property relationships in organic molecules.