Title

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.

Comments

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