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A diiodo-substituted 9-anthracenone

R K Thalji1, G Garcia, B Asfaw

  • 1Department of Chemistry, Louisiana State University, Baton Rouge 70803-1804, USA.

Acta Crystallographica. Section C, Crystal Structure Communications
|August 15, 1997
PubMed
Summary
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Head-to-tail square-shaped cyclic hydrogen bonds leading to dimeric aggregates: 1,8-dibenzoyl-2,7-dihydroxynaphthalene and a comparison with its analogous benzoylnaphthalene.

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This study details the molecular structure of a novel anthrone derivative, 1,8-diiodo-10-hydroxy-10-(3-methylbut-3-en-1-ynyl)anthracen-9(10H)-one. Key findings include its boat conformation and intermolecular hydrogen bonding.

Area of Science:

  • Organic Chemistry
  • Crystallography
  • Molecular Structure Analysis

Background:

  • Anthrone derivatives are important scaffolds in organic chemistry.
  • Understanding the precise three-dimensional structure of novel compounds is crucial for predicting their properties and reactivity.

Purpose of the Study:

  • To elucidate the crystal structure of 1,8-diiodo-10-hydroxy-10-(3-methylbut-3-en-1-ynyl)anthracen-9(10H)-one.
  • To analyze the conformational preferences and intermolecular interactions within the crystal lattice.

Main Methods:

  • Single-crystal X-ray diffraction analysis was employed.
  • Structural parameters including bond lengths, bond angles, and dihedral angles were determined.
  • Intermolecular hydrogen bonding was identified and quantified.

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Main Results:

  • The central ring of the anthrone system exhibits a boat conformation.
  • The dihedral angle between the outer rings is 41.1 (2) degrees.
  • An intermolecular hydrogen bond was observed between hydroxyl and carbonyl groups with an O...O distance of 2.853 (4) A.

Conclusions:

  • The crystal structure of the title compound has been successfully determined.
  • The observed boat conformation and hydrogen bonding provide insights into the solid-state packing and intermolecular forces governing this anthrone derivative.