Benzaldehyde thio-semicarbazone.

Area of Science:

• Crystallography and Molecular Structure
• Organic Chemistry
• Supramolecular Chemistry

Background:

• Thiosemicarbazones are versatile organic compounds with diverse applications.
• Understanding the solid-state structure is crucial for predicting material properties.
• Crystal packing and intermolecular interactions dictate macroscopic behavior.

Purpose of the Study:

• To elucidate the crystal structure of the title compound, C(8)H(9)N(3)S.
• To analyze the molecular conformation and planarity of the thiosemicarbazone derivative.
• To investigate the intermolecular interactions governing crystal assembly.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• Analysis of atomic coordinates and bond lengths/angles.
• Identification and analysis of intermolecular hydrogen bonding networks.

Main Results:

• The asymmetric unit contains two crystallographically distinct molecules of C(8)H(9)N(3)S.
• One molecule is nearly planar (r.m.s. deviation 0.06 Å), while the other shows a 21.7° dihedral angle between the benzene and thiosemicarbazone planes.
• Intermolecular N-H⋯S hydrogen bonds link molecules into layers parallel to the (010) crystallographic plane.

Conclusions:

• The crystal structure reveals significant conformational flexibility within the thiosemicarbazone framework.
• The observed hydrogen bonding pattern is key to the formation of the layered supramolecular architecture.
• These findings provide fundamental insights into the solid-state behavior of this class of compounds.