Microwave Spectrum of CF3Cl

Least-Squares Mass-Dependence Molecular Structures

“…The r s method uses P 0 ␣ values in this equation, and the major anomaly in the method occurs for small coordinates, which are often found to be imaginary (6) from this equation and are best determined by use of the center-of-mass condition.…”

“…[5]. Theoretically, the I 0 ␣ moments of inertia are given by I 0 ␣ ϭ I e ␣ ϩ ⑀ 0 ␣ , [6] where I e ␣ ϵ I rigid ␣ (r e ), the r e are the equilibrium structural parameters, and ⑀ 0 ␣ is the contribution of the zero-point vibrations. Here we treat the atoms as point particles and so ignore the finite electron distribution; this is an adequate approximation for the accuracy considered here.…”

Extended THz measurements of nitrous oxide, N2O

“…In addition to the data collected in the present work, other recent submm/THz measurements [3,4] have been incorporated into the present analysis. The JPL spectral line catalog [5], which previously included only the data available prior to 1996 [6][7][8][9][10][11][12][13], has been updated with the new information.…”

Infrared absorption spectrum of nitrous oxide (N2O) from 1830 cm-1 to 2270 cm-1

“…The microwave measurements of Burrus and Gordy [9] have given very precise values for the ground-state rotational constant, B 0 , and the l -doubling constant, q , of the molecule N 14 N 14 O 16 . Coles and Hughes [10] and Coles, Good, and Lide [11] have made further measurements from which one can obtain B 0 for the isotopes N 14 N 15 O 16 , N 15 N 14 O 16 , and N 14 N 14 O 18 . Combining the results of these workers with the velocity of light (taken as 299,793 km/s) we have calculated these constants in wavenumbers as given in table 1.…”