Cotton-mouton effects, magnetic hyperpolarizabilities, and magnetic anisotropies of the methyl halides. Comparison with molecular Zeeman and high-field NMR spectroscopic results

Journal Article · Thu Feb 07 00:00:00 EST 1991 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100156a034· OSTI ID:5203346

Coonan, M H; Ritchie, G L.D. ^[1]

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1. Univ. of New England, Armidale, New South Wales (Australia)

Measurements of the vapor-phase Cotton-Mouton effects of methyl fluoride, methyl bromide, and methyl iodide are reported. Analysis of the results, in conjunction with those of an earlier study of methane and methyl chloride, shows that in the series CH{sub 3}X (X = H, F, Cl, Br, I) the magnetic hyperpolarizabiity anisotropy, which is related to the quadratic response of the molecular polarizability to a magnetic field, is positive in sign and roughly proportional in magnitude to the mean polarizability. The magnetic anisotropies (10{sup 29}{Delta}{sub {chi}}/J T{sup {minus}2}) found for methyl chloride,methyl bromide, and methyl iodide (CH{sub 3}Cl, {minus}15.0 {plus minus} 1.3; CH{sub 3}Br, -15.1 {plus minus} 0.8; CH{sub 3}I, {minus}18.0 {plus minus} 1.5) are compared with values obtained by the molecular Zeeman and high-field {sup 2}H NMR spectroscopic methods.

• OSTI ID: 5203346
• Journal Information: Journal of Physical Chemistry; (United States), Vol. 95:3; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
METHYL BROMIDE
VOIGT EFFECT
METHYL FLUORIDE
METHYL IODIDE
DATA ANALYSIS
EXPERIMENTAL DATA
GAS ANALYSIS
TEMPERATURE DEPENDENCE
ZEEMAN EFFECT
BROMINATED ALIPHATIC HYDROCARBONS
DATA
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
IODINATED ALIPHATIC HYDROCARBONS
MAGNETO-OPTICAL EFFECTS
NUMERICAL DATA
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
360603* - Materials- Properties