Spin-rotation measurements and magnetic shielding in CH2CF 2

K. H. Casleton, T. D. Gierke, J. H S Wang, Stephen G Kukolich

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Rotational transitions 101→000, 2 12→111, 211→212, and 321→322 of 1,1 difluoroethylene were studied using a molecular beam maser spectrometer. Emission transitions were observed with 6 kHz linewidth (FWHM) and hyperfine structure due to fluorine and hydrogen interactions was resolved. The diagonal elements of the fluorine spin-rotation tensor are Maa=-13.4±3.6 kHz, Mbb=-10.94±0. 68 kHz and Mcc=-6.06 ±0.68 kHz. This data is used to determine paramagnetic contributions to the fluorine chemical shift tensor. Analysis of the data yielded line centers for the rotational transitions of 15774348 ±3 kHz for 101→-000, 26465055±5 for 212→111, and 14419906±3 kHz for 3 21→322, and 15250615±3 kHz for 2 11→212. Results of semiempirical calculations of diamagnetic contributions to the shielding tenors are presented for CH 2CF2 and other molecules. Comparisons of total shielding tensors are made for related molecules.

Original languageEnglish (US)
Pages (from-to)471-476
Number of pages6
JournalThe Journal of Chemical Physics
Volume64
Issue number2
StatePublished - 1976

Fingerprint

Magnetic shielding
magnetic shielding
Fluorine
Tensors
shielding
fluorine
tensors
Shielding
Masers
Molecules
Molecular beams
Chemical shift
masers
Full width at half maximum
hyperfine structure
Linewidth
molecular beams
chemical equilibrium
Spectrometers
molecules

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Casleton, K. H., Gierke, T. D., Wang, J. H. S., & Kukolich, S. G. (1976). Spin-rotation measurements and magnetic shielding in CH2CF 2. The Journal of Chemical Physics, 64(2), 471-476.

Spin-rotation measurements and magnetic shielding in CH2CF 2. / Casleton, K. H.; Gierke, T. D.; Wang, J. H S; Kukolich, Stephen G.

In: The Journal of Chemical Physics, Vol. 64, No. 2, 1976, p. 471-476.

Research output: Contribution to journalArticle

Casleton, KH, Gierke, TD, Wang, JHS & Kukolich, SG 1976, 'Spin-rotation measurements and magnetic shielding in CH2CF 2', The Journal of Chemical Physics, vol. 64, no. 2, pp. 471-476.
Casleton, K. H. ; Gierke, T. D. ; Wang, J. H S ; Kukolich, Stephen G. / Spin-rotation measurements and magnetic shielding in CH2CF 2. In: The Journal of Chemical Physics. 1976 ; Vol. 64, No. 2. pp. 471-476.
@article{138b6d79ea6f484195114d69273ab6c1,
title = "Spin-rotation measurements and magnetic shielding in CH2CF 2",
abstract = "Rotational transitions 101→000, 2 12→111, 211→212, and 321→322 of 1,1 difluoroethylene were studied using a molecular beam maser spectrometer. Emission transitions were observed with 6 kHz linewidth (FWHM) and hyperfine structure due to fluorine and hydrogen interactions was resolved. The diagonal elements of the fluorine spin-rotation tensor are Maa=-13.4±3.6 kHz, Mbb=-10.94±0. 68 kHz and Mcc=-6.06 ±0.68 kHz. This data is used to determine paramagnetic contributions to the fluorine chemical shift tensor. Analysis of the data yielded line centers for the rotational transitions of 15774348 ±3 kHz for 101→-000, 26465055±5 for 212→111, and 14419906±3 kHz for 3 21→322, and 15250615±3 kHz for 2 11→212. Results of semiempirical calculations of diamagnetic contributions to the shielding tenors are presented for CH 2CF2 and other molecules. Comparisons of total shielding tensors are made for related molecules.",
author = "Casleton, {K. H.} and Gierke, {T. D.} and Wang, {J. H S} and Kukolich, {Stephen G}",
year = "1976",
language = "English (US)",
volume = "64",
pages = "471--476",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics Publising LLC",
number = "2",

}

TY - JOUR

T1 - Spin-rotation measurements and magnetic shielding in CH2CF 2

AU - Casleton, K. H.

AU - Gierke, T. D.

AU - Wang, J. H S

AU - Kukolich, Stephen G

PY - 1976

Y1 - 1976

N2 - Rotational transitions 101→000, 2 12→111, 211→212, and 321→322 of 1,1 difluoroethylene were studied using a molecular beam maser spectrometer. Emission transitions were observed with 6 kHz linewidth (FWHM) and hyperfine structure due to fluorine and hydrogen interactions was resolved. The diagonal elements of the fluorine spin-rotation tensor are Maa=-13.4±3.6 kHz, Mbb=-10.94±0. 68 kHz and Mcc=-6.06 ±0.68 kHz. This data is used to determine paramagnetic contributions to the fluorine chemical shift tensor. Analysis of the data yielded line centers for the rotational transitions of 15774348 ±3 kHz for 101→-000, 26465055±5 for 212→111, and 14419906±3 kHz for 3 21→322, and 15250615±3 kHz for 2 11→212. Results of semiempirical calculations of diamagnetic contributions to the shielding tenors are presented for CH 2CF2 and other molecules. Comparisons of total shielding tensors are made for related molecules.

AB - Rotational transitions 101→000, 2 12→111, 211→212, and 321→322 of 1,1 difluoroethylene were studied using a molecular beam maser spectrometer. Emission transitions were observed with 6 kHz linewidth (FWHM) and hyperfine structure due to fluorine and hydrogen interactions was resolved. The diagonal elements of the fluorine spin-rotation tensor are Maa=-13.4±3.6 kHz, Mbb=-10.94±0. 68 kHz and Mcc=-6.06 ±0.68 kHz. This data is used to determine paramagnetic contributions to the fluorine chemical shift tensor. Analysis of the data yielded line centers for the rotational transitions of 15774348 ±3 kHz for 101→-000, 26465055±5 for 212→111, and 14419906±3 kHz for 3 21→322, and 15250615±3 kHz for 2 11→212. Results of semiempirical calculations of diamagnetic contributions to the shielding tenors are presented for CH 2CF2 and other molecules. Comparisons of total shielding tensors are made for related molecules.

UR - http://www.scopus.com/inward/record.url?scp=0040267576&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0040267576&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0040267576

VL - 64

SP - 471

EP - 476

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 2

ER -