1-[5-(3,4-Dichlorophenyl)-3-(2-naphthyl)-4,5-dihydropyrazol-1-yl]ethanone

Area of Science:

• Organic Chemistry
• Crystallography
• Supramolecular Chemistry

Background:

• Pyrazoline derivatives are important heterocyclic compounds with diverse applications.
• Understanding the solid-state structure of novel compounds is crucial for predicting their properties and potential uses.
• The title compound, C(21)H(16)Cl(2)N(2)O, represents a new molecular architecture.

Purpose of the Study:

• To elucidate the three-dimensional molecular structure of the title compound.
• To investigate the intermolecular interactions governing the crystal packing.
• To provide a foundation for further studies on the chemical and physical properties of this class of compounds.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• Analysis of bond lengths, bond angles, and dihedral angles provided insights into the molecular geometry.
• Intermolecular interactions, specifically C-H⋯O hydrogen bonds, were identified and analyzed.

Main Results:

• The central pyrazoline ring exhibited significant dihedral angles with the pendant benzene and naphthalene ring systems (90.1° and 7.8°, respectively).
• The crystal structure is characterized by the formation of molecular chains.
• Weak C-H⋯O interactions were identified as the primary driving force for the observed chain formation.

Conclusions:

• The study successfully determined the crystal structure of the novel C(21)H(16)Cl(2)N(2)O compound.
• The observed molecular geometry and packing arrangement are dictated by specific dihedral angles and weak intermolecular forces.
• The formation of molecular chains via C-H⋯O interactions offers insights into the supramolecular assembly of pyrazoline derivatives.