The Rotational Spectrum of Chlorine Nitrate (CIONO2) in the Three Lowest nv9 Polyads

Document Type

Presentation

Publication Date

6-2008

Abstract

The rotational spectrum of the stratospherically important ClONO2" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">22 molecule has recently been subjected to an extended analysis,}, 1-9 (2007); {\bf 244}, 113-116 (2007).} which covered four states ranging from the ground state to the ν5" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">ν5ν5/ν6ν9" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">ν6ν9ν6ν9 dyad at ≈" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">≈≈560 cm−1" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">−1−1. The analysis was based on a newly recorded broadband FASSST spectrum with an almost complete coverage of the 118-378 GHz region. \vspace{0.2cm} The remaining vibrational states below 560 cm−1" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">−1−1 are the three polyads associated with successively higher excitation of the ν9" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">ν9ν9 mode. These are the (2ν9/ν7" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">2ν9/ν72ν9/ν7) dyad, the (3ν9/ν7ν9" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">3ν9/ν7ν93ν9/ν7ν9) dyad, and the (4ν9/ν72ν9/2ν7" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">4ν9/ν72ν9/2ν74ν9/ν72ν9/2ν7) triad. Rotational transitions in the triad were assigned for the first time and data sets for the two dyads were considerably improved over those obtained previously.}, 8-14 (2002); {\bf 220}, 150-152 (2003).} Transition frequencies in all three polyads, for both 35" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">3535ClONO2" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">22 and 37" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">3737ClONO2" role="presentation" style="display: inline; font-size: 14.88px; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 51, 51); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; position: relative; background-color: rgb(246, 244, 244);">22, were fitted to within experimental accuracy by using a new coupling scheme which accounted in a unified manner for the pertinent Fermi and Coriolis interactions. Various tests used to ensure that the 'true' solution has been reached are discussed.

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Presented at the 63rd International Symposium on Molecular Spectroscopy, Columbus, OH, June 16-20, 2008.

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