Chlorine Quadrupole Coupling in Methyl Chloride. Variation of Quadrupole Coupling Strength with Isotopic Substitution

Stephen G. Kukolich; Albert C. Nelson

doi:10.1021/ja00784a600

Chlorine Quadrupole Coupling in Methyl Chloride. Variation of Quadrupole Coupling Strength with Isotopic Substitution

Stephen G. Kukolich, Albert C. Nelson

Chemistry and Biochemistry

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

High-resolution measurements of hyperfine structure on the J = 1 → 0 transitions in CH₃³⁵Cl and CH₃³⁷Cl were made using a molecular beam maser spectrometer. The measured ³⁵Cl quadrupole coupling strength is eqQ = 74,753 ± 2 kHz and spin-rotation constant C(³⁵Cl) = 2.4 ± 0.6 kHz. The measured 87C1 quadrupole coupling strength is eqQ = 58,910 ± 2 kHz and spin-rotation constant C(³⁷Cl) = 1.4 ± 0.6 kHz. These results are compared with ³⁵Cl quadrupole coupling strengths obtained for CH₂DCl and CD₃Cl and a systematic decrease in ³⁵Cl quadrupole coupling is related to changes in the structure and properties of the methyl group on deuterium substitution.

Original language	English (US)
Pages (from-to)	680-682
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	95
Issue number	3
DOIs	https://doi.org/10.1021/ja00784a600
State	Published - Feb 1 1973

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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title = "Chlorine Quadrupole Coupling in Methyl Chloride. Variation of Quadrupole Coupling Strength with Isotopic Substitution",

abstract = "High-resolution measurements of hyperfine structure on the J = 1 → 0 transitions in CH335Cl and CH337Cl were made using a molecular beam maser spectrometer. The measured 35Cl quadrupole coupling strength is eqQ = 74,753 ± 2 kHz and spin-rotation constant C(35Cl) = 2.4 ± 0.6 kHz. The measured 87C1 quadrupole coupling strength is eqQ = 58,910 ± 2 kHz and spin-rotation constant C(37Cl) = 1.4 ± 0.6 kHz. These results are compared with 35Cl quadrupole coupling strengths obtained for CH2DCl and CD3Cl and a systematic decrease in 35Cl quadrupole coupling is related to changes in the structure and properties of the methyl group on deuterium substitution.",

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year = "1973",

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T1 - Chlorine Quadrupole Coupling in Methyl Chloride. Variation of Quadrupole Coupling Strength with Isotopic Substitution

AU - Kukolich, Stephen G.

AU - Nelson, Albert C.

PY - 1973/2/1

Y1 - 1973/2/1

N2 - High-resolution measurements of hyperfine structure on the J = 1 → 0 transitions in CH335Cl and CH337Cl were made using a molecular beam maser spectrometer. The measured 35Cl quadrupole coupling strength is eqQ = 74,753 ± 2 kHz and spin-rotation constant C(35Cl) = 2.4 ± 0.6 kHz. The measured 87C1 quadrupole coupling strength is eqQ = 58,910 ± 2 kHz and spin-rotation constant C(37Cl) = 1.4 ± 0.6 kHz. These results are compared with 35Cl quadrupole coupling strengths obtained for CH2DCl and CD3Cl and a systematic decrease in 35Cl quadrupole coupling is related to changes in the structure and properties of the methyl group on deuterium substitution.

AB - High-resolution measurements of hyperfine structure on the J = 1 → 0 transitions in CH335Cl and CH337Cl were made using a molecular beam maser spectrometer. The measured 35Cl quadrupole coupling strength is eqQ = 74,753 ± 2 kHz and spin-rotation constant C(35Cl) = 2.4 ± 0.6 kHz. The measured 87C1 quadrupole coupling strength is eqQ = 58,910 ± 2 kHz and spin-rotation constant C(37Cl) = 1.4 ± 0.6 kHz. These results are compared with 35Cl quadrupole coupling strengths obtained for CH2DCl and CD3Cl and a systematic decrease in 35Cl quadrupole coupling is related to changes in the structure and properties of the methyl group on deuterium substitution.

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Chlorine Quadrupole Coupling in Methyl Chloride. Variation of Quadrupole Coupling Strength with Isotopic Substitution

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