Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9589484 | Journal of Molecular Spectroscopy | 2005 | 13 Pages |
Abstract
A high-resolution (0.003 cmâ1) infrared absorption spectrum of the first overtone of the fundamental mode ν8 of methylene fluoride (CH2F2) has been measured on a Bruker IFS 120-HR Fourier transform infrared spectrometer. More than 2000 ro-vibration transitions in the range of 2770-2900 cmâ1 with J ⩽ 45 and Ka ⩽ 20 have been assigned in this B-type band centered at 2838.5 cmâ1. Precise value for the band origin (2838.579799 cmâ1) and centrifugal distortion constants up to third order (ΦJK, ΦKJ, and ΦK) have been obtained by fitting a total of 1474 unblended ro-vibration transitions (J ⩽ 45 and Ka ⩽ 13) of the 2ν8 band with a standard deviation of 0.00029 cmâ1 using a Watson's A-reduced Hamiltonian in the Ir representation. Signature of perturbations with nearby states has been seen.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Param Jeet Singh, M.N. Deo, K. Kawaguchi,