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Updated: Jun 17, 2026

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
Spectroscopic investigations and structural confirmation studies on thiourea
K Srinivasan1, S Gunasekaran, S Krishnan
1Department of Physics, R M K Engineering College, R S M Nagar, Kavaraipettai, Tamil Nadu, India. hajona24@yahoo.co.in
Fourier transform infrared and Raman spectroscopy were used to analyze thiourea's molecular structure. Vibrational analysis confirmed its C(2upsilon) symmetry, supported by molecular constants and potential energy distribution.
Area of Science:
- Molecular Spectroscopy
- Vibrational Analysis
- Chemical Physics
Background:
- Thiourea is a significant organic compound with diverse applications.
- Understanding its molecular structure and vibrational properties is crucial for various chemical and material science fields.
Purpose of the Study:
- To conduct a comprehensive vibrational analysis of thiourea.
- To assign and validate its molecular structure using spectroscopic data.
- To elucidate the symmetry of the thiourea molecule.
Main Methods:
- Fourier Transform Infrared (FTIR) spectroscopy was employed in the 4000-400 cm⁻¹ region.
- Raman spectroscopy was utilized in the 4000-10 cm⁻¹ region.
- Vibrational assignments were made based on C(2upsilon) point group symmetry.
Main Results:
- Complete vibrational spectra for thiourea were obtained and analyzed.
- The molecular structure of thiourea was confirmed to possess C(2upsilon) symmetry.
- Molecular constants and potential energy distribution supported the vibrational assignments.
Conclusions:
- The study successfully characterized the vibrational modes of thiourea.
- The C(2upsilon) symmetry of thiourea was rigorously validated through spectroscopic analysis.
- The findings provide a fundamental understanding of thiourea's molecular dynamics.
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