The high-resolution infrared spectrum of the deuterated isotopologue of acetylene, 13C12CD2, has been recorded by Fourier transform spectroscopy in the range 450−1800 cm−1. The bending fundamental bands and a number of overtone, combination and hot bands have been identified for both isotopomers. In total, 13 vibrational bands were analysed, involving all the l−vibrational components of the excited bending states up to vt = v4 + v5 = 2. All the assigned transitions have been fitted simultaneously on the basis of a model Hamiltonian which takes into account the usual rotation and vibration l−type resonances, together with the Darling-Dennison coupling between the v4 = 2 and v5 = 2 bending states. The ground state and 9 vibrationally excited states have been characterized. The spectroscopic parameters obtained from the least-squares procedure reproduce 1334 transitions with a standard deviations of the fit equal to 0.00037 cm−1. In addition, a few bands involving states of the vt = 3 manifolds have been identified and analysed.

G. Di Lonardo, L. Fusina, F. Tamassia. (2011). High-resolution infrared spectroscopy of 13C12CD2: the bending states up to v4+v5=2.. S. L. : s.n.

High-resolution infrared spectroscopy of 13C12CD2: the bending states up to v4+v5=2.

DI LONARDO, GIANFRANCO;FUSINA, LUCIANO;TAMASSIA, FILIPPO
2011

Abstract

The high-resolution infrared spectrum of the deuterated isotopologue of acetylene, 13C12CD2, has been recorded by Fourier transform spectroscopy in the range 450−1800 cm−1. The bending fundamental bands and a number of overtone, combination and hot bands have been identified for both isotopomers. In total, 13 vibrational bands were analysed, involving all the l−vibrational components of the excited bending states up to vt = v4 + v5 = 2. All the assigned transitions have been fitted simultaneously on the basis of a model Hamiltonian which takes into account the usual rotation and vibration l−type resonances, together with the Darling-Dennison coupling between the v4 = 2 and v5 = 2 bending states. The ground state and 9 vibrationally excited states have been characterized. The spectroscopic parameters obtained from the least-squares procedure reproduce 1334 transitions with a standard deviations of the fit equal to 0.00037 cm−1. In addition, a few bands involving states of the vt = 3 manifolds have been identified and analysed.
2011
22nd Colloquium on High Resolution Molecular Spectroscopy. Universitè de Bourgogne.Dijon, France, August 29 - September 2 2011. Program and Abstracts
196
196
G. Di Lonardo, L. Fusina, F. Tamassia. (2011). High-resolution infrared spectroscopy of 13C12CD2: the bending states up to v4+v5=2.. S. L. : s.n.
G. Di Lonardo; L. Fusina; F. Tamassia.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/108341
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