Spectroscopic detection of isolated carbonic acid
Carbonic acid (cis-trans H2CO3) in the gas phase has been successfully produced in a supersonic jet using a pulsed discharge nozzle, and pure rotational transitions of this molecule have been observed by Fourier-transform microwave spectroscopy. Although the observed cis-trans conformer is not the g...
| Published in: | The Journal of Chemical Physics |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
AIP Publishing
2009
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1063/1.3141405 https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/1.3141405/15862732/204308_1_online.pdf |
| Summary: | Carbonic acid (cis-trans H2CO3) in the gas phase has been successfully produced in a supersonic jet using a pulsed discharge nozzle, and pure rotational transitions of this molecule have been observed by Fourier-transform microwave spectroscopy. Although the observed cis-trans conformer is not the global minimum structure, it is an important conformer as a starting point of its dissociation to CO2 and H2O. Three deuterated isotopologues of the cis-trans conformer (cis-trans HDCO3, cis-trans DHCO3, and cis-trans D2CO3) have also been observed, yielding the r0 structure of cis-trans H2CO3. The present result is accurate enough to be used in radio astronomical observations. |
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