Vibrational relaxation of FO(ν=1) radicals studied by fast-magnetic-field-jump time-resolved LMR. Experiment and theory

A. I. Chichinin; L. N. Krasnoperov

doi:10.1016/0301-0104(90)89106-Z

Vibrational relaxation of FO(ν=1) radicals studied by fast-magnetic-field-jump time-resolved LMR. Experiment and theory

A. I. Chichinin, L. N. Krasnoperov

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Abstract

The method of fast magnetic field jump combined with the time-resolved LMR technique has been employed to measure the rate constants of vibrational relaxation of FO(ν=1) at T = 320 K by SiF₄, CH₃F, O₃, NF₃, PH₃, SF₆, CF₄, NO and NO₂: 6.4×10^-11, 1.4×10^-11, 1.4×10^-11, 7.2×10^-12, 1.5×10^-11, 1.2×10^-11, 2.0×10^-13, 4.4×10^-11, 9.3×10^-12 cm³/s, respectively. These rate constants have been compared with those calculated in terms of the Sharma and Brau theory. All the earlier reported results of calculations by this theory have been tabulated. The intensities of FO LMR spectral lines have been calculated. The technique based on measuring LMR signal saturation value has been applied to estimating the dipole moment of vibrational transition of FO. The value obtained, 0.084±0.012 D is 19% lower than that calculated quantum-chemically by Langhoff, Bauschlicher, and Partridge.

Original language	English (US)
Pages (from-to)	281-296
Number of pages	16
Journal	Chemical Physics
Volume	143
Issue number	2
DOIs	https://doi.org/10.1016/0301-0104(90)89106-Z
State	Published - May 15 1990
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/0301-0104(90)89106-Z

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@article{f967b234877143cf9642c2c5fa43126c,

title = "Vibrational relaxation of FO(ν=1) radicals studied by fast-magnetic-field-jump time-resolved LMR. Experiment and theory",

abstract = "The method of fast magnetic field jump combined with the time-resolved LMR technique has been employed to measure the rate constants of vibrational relaxation of FO(ν=1) at T = 320 K by SiF4, CH3F, O3, NF3, PH3, SF6, CF4, NO and NO2: 6.4×10-11, 1.4×10-11, 1.4×10-11, 7.2×10-12, 1.5×10-11, 1.2×10-11, 2.0×10-13, 4.4×10-11, 9.3×10-12 cm3/s, respectively. These rate constants have been compared with those calculated in terms of the Sharma and Brau theory. All the earlier reported results of calculations by this theory have been tabulated. The intensities of FO LMR spectral lines have been calculated. The technique based on measuring LMR signal saturation value has been applied to estimating the dipole moment of vibrational transition of FO. The value obtained, 0.084±0.012 D is 19% lower than that calculated quantum-chemically by Langhoff, Bauschlicher, and Partridge.",

author = "Chichinin, {A. I.} and Krasnoperov, {L. N.}",

year = "1990",

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doi = "10.1016/0301-0104(90)89106-Z",

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T1 - Vibrational relaxation of FO(ν=1) radicals studied by fast-magnetic-field-jump time-resolved LMR. Experiment and theory

AU - Chichinin, A. I.

AU - Krasnoperov, L. N.

PY - 1990/5/15

Y1 - 1990/5/15

N2 - The method of fast magnetic field jump combined with the time-resolved LMR technique has been employed to measure the rate constants of vibrational relaxation of FO(ν=1) at T = 320 K by SiF4, CH3F, O3, NF3, PH3, SF6, CF4, NO and NO2: 6.4×10-11, 1.4×10-11, 1.4×10-11, 7.2×10-12, 1.5×10-11, 1.2×10-11, 2.0×10-13, 4.4×10-11, 9.3×10-12 cm3/s, respectively. These rate constants have been compared with those calculated in terms of the Sharma and Brau theory. All the earlier reported results of calculations by this theory have been tabulated. The intensities of FO LMR spectral lines have been calculated. The technique based on measuring LMR signal saturation value has been applied to estimating the dipole moment of vibrational transition of FO. The value obtained, 0.084±0.012 D is 19% lower than that calculated quantum-chemically by Langhoff, Bauschlicher, and Partridge.

AB - The method of fast magnetic field jump combined with the time-resolved LMR technique has been employed to measure the rate constants of vibrational relaxation of FO(ν=1) at T = 320 K by SiF4, CH3F, O3, NF3, PH3, SF6, CF4, NO and NO2: 6.4×10-11, 1.4×10-11, 1.4×10-11, 7.2×10-12, 1.5×10-11, 1.2×10-11, 2.0×10-13, 4.4×10-11, 9.3×10-12 cm3/s, respectively. These rate constants have been compared with those calculated in terms of the Sharma and Brau theory. All the earlier reported results of calculations by this theory have been tabulated. The intensities of FO LMR spectral lines have been calculated. The technique based on measuring LMR signal saturation value has been applied to estimating the dipole moment of vibrational transition of FO. The value obtained, 0.084±0.012 D is 19% lower than that calculated quantum-chemically by Langhoff, Bauschlicher, and Partridge.

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JO - Chemical Physics

JF - Chemical Physics

IS - 2

ER -

Vibrational relaxation of FO(ν=1) radicals studied by fast-magnetic-field-jump time-resolved LMR. Experiment and theory

Abstract

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