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A 2E''-X2A2' transition of NO3 trapped in solid neon
Marilyn E Jacox1, Warren E Thompson
1Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8441, USA. marilyn.jacox@nist.gov
The Journal of Physical Chemistry. A
|December 5, 2009
Summary
Researchers stabilized nitrogen trioxide (NO(3)) in a neon matrix, confirming and extending previous gas-phase observations. This study provides new spectral data for multiple isotopologues, supporting Jahn-Teller interaction analysis.
Area of Science:
- Molecular spectroscopy
- Matrix isolation techniques
- Quantum chemistry
Background:
- Nitrogen trioxide (NO(3)) is a key atmospheric species.
- Previous gas-phase studies provided limited spectral data.
- Understanding NO(3) electronic states is crucial for atmospheric chemistry.
Purpose of the Study:
- To stabilize NO(3) in a neon matrix for detailed spectroscopic analysis.
- To investigate the electronic transitions and vibrational structure of NO(3).
- To examine the influence of Jahn-Teller interactions in the excited state.
Main Methods:
- Matrix isolation spectroscopy at 4.3 K.
- UV-Vis absorption spectroscopy between 7000-10,000 cm(-1).
- Analysis of spectral data for multiple NO(3) isotopologues.
Main Results:
- Successful stabilization and detection of NO(3) in a neon matrix.
- Observation of vibronically allowed transitions to the A (2)E'' state.
- Acquisition of spectra for six isotopologues, including four with C(2v) symmetry.
- Confirmation of previous assignments and evidence for Jahn-Teller interactions.
Conclusions:
- Matrix isolation provides a stable environment for NO(3) spectroscopy.
- The study confirms and extends gas-phase findings on NO(3) electronic structure.
- Jahn-Teller effects are present in the A 2E state of NO(3).
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