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Dimethyl 1-(3-cyano-benz-yl)-1H-pyrazole-3,5-dicarboxyl-ate.

Jie Xiao1, Ji-Yuan Yao, Hong Zhao

  • 1Ordered Matter Science Research Center, College of Chemistry and Chemical, Engineering, Southeast University, Nanjing 210096, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|May 18, 2011
PubMed
Summary
This summary is machine-generated.

The crystal structure of C(15)H(13)N(3)O(4) reveals a significant dihedral angle between its pyrazole and benzene rings. This molecular arrangement is further stabilized by specific intra- and inter-molecular hydrogen bonding interactions.

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Area of Science:

  • Crystallography
  • Molecular Chemistry

Background:

  • Understanding the three-dimensional arrangement of atoms in molecules is crucial for predicting their properties and reactivity.
  • Pyrazole and benzene derivatives are common scaffolds in medicinal chemistry and materials science.

Purpose of the Study:

  • To elucidate the crystal structure of the title compound, C(15)H(13)N(3)O(4).
  • To analyze the dihedral angle between the pyrazole and benzene ring systems.
  • To identify and characterize stabilizing interactions within the crystal lattice.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
  • Analysis of the crystal structure included the measurement of dihedral angles and identification of hydrogen bonding.

Main Results:

  • The dihedral angle between the pyrazole and benzene ring planes was determined to be 67.7(1)°.
  • The crystal structure is stabilized by one intramolecular C-H⋯O hydrogen bond.
  • Two additional weak intermolecular C-H⋯O interactions were identified, contributing to crystal packing.

Conclusions:

  • The study provides precise structural data for C(15)H(13)N(3)O(4), highlighting the non-planar conformation between the aromatic rings.
  • The identified hydrogen bonding network plays a significant role in the stabilization of the crystal structure.