3-Acetyl-1-(2,5-dimethyl-phen-yl)thio-urea

Area of Science:

• Crystallography
• Chemical Physics
• Molecular Chemistry

Background:

• Understanding molecular conformation and intermolecular interactions is crucial in chemical physics.
• Crystal structure analysis provides insights into molecular arrangement and bonding.
• Thioamide and amide functional groups exhibit unique electronic and structural properties.

Purpose of the Study:

• To elucidate the crystal structure and molecular conformation of the title compound, C(11)H(14)N(2)OS.
• To investigate the nature of hydrogen bonding and intermolecular interactions within the crystal lattice.
• To characterize the spatial arrangement of thioamide and amide groups in the solid state.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the three-dimensional structure.
• Analysis of bond lengths, bond angles, and torsion angles to describe molecular conformation.
• Identification and analysis of hydrogen bonding networks (N-H⋯O and N-H⋯S) and their role in crystal packing.

Main Results:

• The crystal structure of C(11)H(14)N(2)OS was successfully determined.
• The thioamide C=S and amide C=O bonds were found to be in an anti orientation relative to each other.
• N-H bonds were also observed in an anti configuration, stabilized by an intramolecular N-H⋯O hydrogen bond.
• Molecules were observed to form inversion dimers through intermolecular N-H⋯S hydrogen bonds in the crystal.

Conclusions:

• The molecular conformation of C(11)H(14)N(2)OS is characterized by anti arrangements of key functional groups.
• Intramolecular N-H⋯O hydrogen bonding plays a significant role in stabilizing the molecular conformation.
• Intermolecular N-H⋯S hydrogen bonds dictate the crystal packing, leading to the formation of inversion dimers.