Journal ArticleDOI
Electric Dipole Moments of Several Molecules from the Stark Effect
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TLDR
The following molecular electric dipole moments, in Debye units, have been obtained from the Stark effect of pure rotational spectra observed in the microwave region: 0.234±0.004 for NF3, 1.03±0,0.01 for PF3; 1.77± 0.06 for CH3CN; 3.83± 0.,3.00±0.,0.02 for HCN, 3.92± 0,2.Abstract:
The following molecular electric dipole moments, in Debye units, have been obtained from the Stark effect of pure rotational spectra observed in the microwave region: 0.234±0.004 for NF3; 1.03±0.01 for PF3; 1.77±0.02 for POF3; 3.00±0.02 for HCN; 3.92±0.06 for CH3CN; 3.83±0.06 for CH3NC; 1.79±0.02 for CH3F; 0.75±0.01 for CH3CCH; 1.26±0.01 for SiF3H. All values apply to the ground vibrational state.read more
Citations
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The structure of tertiary butyl isocyanide
TL;DR: In this article, the structure of tert. butyl isocyanide was calculated from microwave measurements and an assumed structure of the tertiary butyl group, and the carbon-nitrogen triple bond distance was found to be in excellent agreement with the corresponding distance in the isomeric tertiary secondary butyl cyanide.
Journal ArticleDOI
CO2 laser Stark spectroscopy of the ν4 band of SiHF3: The C0 rotational constant and vibrationally induced dipole moment
TL;DR: In this article, the ν4 (SiF3 degenerate stretch) fundamental band of SiHF3 has been investigated by the CO2 laser Stark spectroscopy, and the vibrationally induced dipole moment was found to give remarkable perturbations of the type (Δl,ΔK)=(2,−1) in the λ4 vibrational state under intense electric field.
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Microwave spectrum, barrier to internal rotation, and dipole moment of SiF3 BF2
TL;DR: In this article, the microwave spectrum of 25 SiF 3 11 BF 2 has been studied in the frequency range 24-40 GHz, and a computer treatment has been developed based on an ISM as outlined by Wilson et al.
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The molecular structure, vibrational force field, spectral frequencies, and infrared intensities of CH3POF2
TL;DR: In this paper, the molecular structure of CH3POF2 has been determined by single determinant calculations using split valence shell basis sets with polarization functions on phosphorus, aided by similar structural calculations on CH3POH2, CH3PF2, Ch3PH2 and POF3.
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Donor–acceptor properties of isonitriles studied by photoelectron spectroscopy and electron transmission spectroscopy
TL;DR: The VAEs of the empty pi* orbitals involved in the d/pi* back-donation indicate that aryl isonitriles are better acceptors than their aliphatic counterparts (VAE >2.7 eV), and the pi-donor ability could also play some role in metal-ligand bonding.
References
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A Stark-effect microwave spectrograph of high sensitivity.
TL;DR: A microwave spectrograph is described in which the absorption of the gas being studied is modulated by the application of a periodic Stark‐effect field so that the output of the crystal detector contains a radiofrequency component which can be amplified with a narrow‐band amplifier.
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Electric quadrupole coupling of the nuclear spin with the rotation of a polar diatomic molecule in an external electric field
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