The high resolution FTIR spectrum of the v2 band of formaldehyde isotopomer H213CO
The Fourier transform infrared (FTIR) absorption spectrum of the ν2 fundamental band of the formaldehyde isotopomer H213CO was recorded at an unapodized resolution of 0.0063 cm−1 in the 1630–1780 cm−1 region. Upper state (ν2 = 1) rovibrational constants inclusive of three rotational, five quartic, a...
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| Main Authors: | , |
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| Format: | text |
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Animo Repository
2011
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| Online Access: | https://animorepository.dlsu.edu.ph/faculty_research/5779 |
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| Institution: | De La Salle University |
| Summary: | The Fourier transform infrared (FTIR) absorption spectrum of the ν2 fundamental band of the formaldehyde isotopomer H213CO was recorded at an unapodized resolution of 0.0063 cm−1 in the 1630–1780 cm−1 region. Upper state (ν2 = 1) rovibrational constants inclusive of three rotational, five quartic, and six sextic centrifugal distortion constants were accurately determined by assigning and fitting 447 unperturbed infrared transitions with a rms deviation of 0.00056 cm−1 using Watson’s A-reduced Hamiltonian in the Ir representation. Analysis of new transitions measured in this work yielded more higher-order upper state constants with greater accuracy than previously reported. The band center of the A-type ν2 band was found to be 1707.980943 ± 0.000058 cm−1 while the calculated inertial defect Δ2 of the H213CO molecule was 0.09581 ± 0.00004 μÅ2. |
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