Pyridine-2-carbaldehyde thio-semi-carbazone.

Area of Science:

• Crystallography
• Chemical structure analysis
• Supramolecular chemistry

Background:

• Thiosemicarbazones are versatile organic compounds with diverse applications.
• Understanding the solid-state structure is crucial for predicting chemical properties.
• Crystal engineering aims to design materials with specific properties based on intermolecular interactions.

Purpose of the Study:

• To elucidate the crystal structure of the title compound, C(7)H(8)N(4)S.
• To analyze the conformational differences between independent molecules in the asymmetric unit.
• To investigate the role of intermolecular hydrogen bonding in the compound's solid-state architecture.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• Conformational analysis was performed by examining dihedral angles.
• Hydrogen bonding networks were identified and characterized.

Main Results:

• The asymmetric unit contains two independent molecules of C(7)H(8)N(4)S with distinct conformations.
• Dihedral angles between the pyridine ring and thiosemicarbazone unit range from 2.88(5)° to 6.30(5)°.
• Intermolecular hydrogen bonds (N-H⋯N and N-H⋯S) form layered structures parallel to the ab plane.

Conclusions:

• The study provides a detailed structural characterization of the title thiosemicarbazone.
• Conformational flexibility and specific hydrogen bonding patterns dictate the compound's supramolecular assembly.
• The findings contribute to the understanding of thiosemicarbazone crystal engineering and design.