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Updated: Jul 27, 2025

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
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(

Bakr F Abdel-Wahab1, Abdelbasset A Farahat2,3, Mohamed S Bekheit4

  • 1Applied Organic Chemistry Department, Chemical Industries Research Institute, National Research Centre, Dokki, Giza 12622, Egypt.

Iucrdata
|June 8, 2023
PubMed
Summary

This study details the crystal structure of C25H19N5O3, revealing two distinct molecular conformations within the asymmetric unit. The compound

Keywords:
carbohydrazidescrystal structureheterocyclesisatinpyrazolessynthesis

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Area of Science:

  • Crystallography
  • Molecular Structure
  • Supramolecular Chemistry

Background:

  • Understanding molecular conformation is crucial for predicting chemical properties.
  • Intermolecular interactions, such as hydrogen bonds and pi-pi stacking, dictate crystal packing and material characteristics.

Purpose of the Study:

  • To elucidate the crystal structure of the title compound, C25H19N5O3.
  • To analyze the conformational differences between independent molecules in the asymmetric unit.
  • To identify and describe the intermolecular interactions present in the crystal lattice.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
  • Conformational analysis was performed on the two independent molecules.
  • Intermolecular interactions, including N-H⋯O hydrogen bonds and π-π stacking, were identified and characterized.

Main Results:

  • The asymmetric unit contains two independent molecules of C25H19N5O3 with subtly different conformations.
  • The crystal structure is stabilized by a network of N-H⋯O hydrogen bonds.
  • Significant π-π stacking interactions were observed between aromatic rings of adjacent molecules.

Conclusions:

  • The structural analysis provides fundamental insights into the solid-state behavior of C25H19N5O3.
  • The identified intermolecular interactions are key to the observed crystal packing.
  • This detailed structural information can inform future studies on the compound's properties and applications.