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The crystal structure of a trichloro-nitro compound (C5H2Cl3NO) was determined. Molecules form hydrogen-bonded dimers in the solid state, creating specific ring structures.

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Area of Science:

  • Crystallography
  • Solid-state chemistry
  • Molecular structure

Background:

  • Understanding the solid-state behavior of organic compounds is crucial for materials science.
  • Intermolecular interactions dictate crystal packing and properties.
  • The specific compound C5H2Cl3NO has not been previously characterized in detail.

Purpose of the Study:

  • To elucidate the crystal structure of C5H2Cl3NO.
  • To investigate the intermolecular interactions present in the crystal lattice.
  • To characterize the self-assembly behavior of the molecule in the solid state.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
  • Analysis of the crystal structure focused on identifying hydrogen bonding and planarity.
  • The formation of hydrogen-bonded loops was analyzed using crystallographic software.

Main Results:

  • The title compound, C5H2Cl3NO, exhibits a nearly planar molecular geometry.
  • In the crystal lattice, molecules self-assemble into centrosymmetric hydrogen-bonded dimers.
  • These dimers are stabilized by pairwise O-H⋯N interactions, forming characteristic R2(8) loops.

Conclusions:

  • The crystal structure of C5H2Cl3NO reveals a propensity for dimerization via hydrogen bonding.
  • The observed R2(8) loops are a key feature of the molecular organization in the solid state.
  • This study provides fundamental insights into the solid-state chemistry of this halogenated nitro-compound.