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Summary

This study reveals that intermolecular hydrogen bonds in C(15)H(21)NO(4) crystals form chains. These molecular interactions influence the compound's crystal structure and the spatial arrangement of its functional groups.

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Area of Science:

  • Crystal Engineering
  • Supramolecular Chemistry
  • Organic Chemistry

Background:

  • Understanding intermolecular forces is crucial for predicting and controlling crystal structures.
  • Hydrogen bonding plays a significant role in the self-assembly of molecules in the solid state.

Purpose of the Study:

  • To elucidate the crystal structure of the title compound, C(15)H(21)NO(4).
  • To investigate the nature and role of intermolecular interactions, specifically hydrogen bonding, in organizing the crystal lattice.
  • To quantify the spatial relationship between key functional groups within the crystal structure.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the three-dimensional molecular arrangement.
  • Analysis of intermolecular contacts, including hydrogen bonds (N-H⋯O and C-H⋯O), was performed.
  • Geometric parameters, such as dihedral angles, were calculated to describe molecular conformation.

Main Results:

  • The crystal structure of C(15)H(21)NO(4) was successfully determined.
  • Intermolecular N-H⋯O hydrogen bonds were identified, linking molecules into chains along the crystallographic c axis.
  • Additional C-H⋯O interactions were observed, contributing to the overall crystal packing.
  • A dihedral angle of 50.08(3)° was measured between the benzene ring and the enamide group, indicating their relative orientation.

Conclusions:

  • The crystal structure is stabilized by a network of intermolecular hydrogen bonds, primarily N-H⋯O interactions forming chains.
  • The observed hydrogen bonding pattern dictates the supramolecular architecture of the compound in the solid state.
  • The conformational analysis, represented by the dihedral angle, provides insight into the molecular geometry within the crystal environment.