论文信息 - N.M.R. studies of 3,3,3-trifluoropropyne dissolved in different nematic liquid crystals

N.M.R. studies of 3,3,3-trifluoropropyne dissolved in different nematic liquid crystals

A high-resolution N.M.R. study of 3,3,3-trifluoropropyne in different liquid crystals is reported. The relative geometry obtained agrees with microwave data. The sign of J (HF) is negative. The anisotropies in fluorine and proton chemical shifts have been measured, and are comparable in magnitude and sign with values previously reported for similar compounds.

E. Burnell | C. A. D. Lange | A. Buckingham | A. J. Rest

[1] T. Krugh,et al. Chemical shift anisotropies from nuclear magnetic resonance studies in liquid crystals , 1967 .

[2] E. Burnell,et al. Chemical shift anisotropies from nuclear magnetic resonance studies of oriented molecules , 1967 .

[3] R. Bernheim,et al. Absolute Signs of Indirect Nuclear Spin-Spin Coupling Constants , 1967 .

[4] A. Saupe,et al. Determination of Bond Angle of CH3Groups by Proton Magnetic Resonance in Nematic Liquid Crystalline Solutions , 1967 .

[5] K. Mclauchlan,et al. Chapter 2 High resolution nuclear magnetic resonance in partially oriented molecules , 1967 .

[6] A. Saupe,et al. Proton Magnetic Resonance Spectra of Oriented Molecules: Acetylenic Compounds, Acetonitrile and Methanol , 1966 .

[7] F. Miller,et al. Vibrational spectra of CF3CCH, CF3CCD, and CF3CCCF3 , 1963 .

[8] Dudley A. Williams,et al. The nuclear magnetic resonance spectra of fluorocarbons: Part III. Halogenated propynes, propenes, butenes, and cyclopentenes , 1961 .

[9] L. Bartell. Effects of Anharmonicity of Vibration on the Diffraction of Electrons by Free Molecules , 1955 .

[10] R. Shulman,et al. The Structure of Trifluoromethyl Acetylene from the Microwave Spectrum and Electron Diffraction Pattern , 1951 .