On the vibrations of formic acid predicted from first principles
Anna Klára Kelemen1, Sandra Luber2
1Department of Chemistry, University of Zurich, CH-8057 Zurich, Switzerland.
Physical Chemistry Chemical Physics : PCCP
|November 17, 2022
Summary
This review covers first principles anharmonic studies on gaseous formic acid molecular vibrations. It compares computed vibrational states with experimental data, highlighting coordinate coupling effects.
Area of Science:
- Molecular Spectroscopy
- Quantum Chemistry
- Computational Physics
Background:
- Formic acid exists as cis- and trans- isomers.
- Understanding molecular vibrations is crucial for chemical analysis.
- First principles calculations provide insights into molecular behavior.
Purpose of the Study:
- To review recent first principles, anharmonic studies on gaseous formic acid monomer vibrations.
- To collect and support fundamental vibrational transitions for cis- and trans- formic acid.
- To investigate the impact of coordinate coupling on computed vibrational states.
Main Methods:
- First principles calculations
- Anharmonic studies
- High-resolution experimental data analysis
Main Results:
- Collected and supported fundamental vibrational transitions for both cis- and trans- formic acid.
- Demonstrated the influence of coordinate coupling on the convergence of vibrational states.
- Aligned theoretical predictions with experimental observations.
Conclusions:
- First principles anharmonic studies are valuable for understanding formic acid vibrations.
- Coordinate coupling is a significant factor in accurately predicting vibrational states.
- High-resolution experiments validate theoretical findings.
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