P. Baron, D. O. Harris
1974
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0
Influential Citations
35
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Journal
Journal of Molecular Spectroscopy
Abstract
Abstract The microwave spectrum of 1,3-dioxolane was investigated in the region 8–35 GHz. Nine vibrational states were assigned which indicated that the molecule undergoes pseudorotation. The dipole moment for each vibrational state was measured and found to be constant within experimental error at 1.19 ± 0.03 D. The lowest energy pair of vibrational states were found to be connected by rotation vibration transitions. The splitting of this pair was found to be 64 840.65 MHz with a perturbation element 435 ± 30 MHz. From the variation in the rotational constants, the far-infrared data, and the v = 0, 1 splitting the Hamiltonian for pseudorotation was found. Hφ =3.99 Pφ ±5.1(1-cos φ )−20.01(1−cos2 φ ).The phase of the potential function was determined from relative intensity measurements to be such that the maximum in the potential energy is at the twisted configuration with the bent configuration being 10.2 cm −1 lower in energy.