Proton Magnetic Resonance Spectroscopy Studies of the Substituted Aromatic Solvent Effect on the Hindered Internal Rotation of N,N-dimethylacetamide

Proton Magnetic Resonance Spectroscopy Studies of the Substituted Aromatic Solvent Effect on the Hindered Internal Rotation of N,N-dimethylacetamide PDF Author: Zon-son Chang
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Category :
Languages : en
Pages : 57

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Study of Hindered Internal Rotation in Some Substituted Amides by Nuclear Magnetic Resonance Spectroscopy

Study of Hindered Internal Rotation in Some Substituted Amides by Nuclear Magnetic Resonance Spectroscopy PDF Author: James Calvin Woodbrey
Publisher:
ISBN:
Category : Amides
Languages : en
Pages : 420

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Study of Hindered Internal Rotation in Some Substituted Amides by Nuclear Magnetic Resonance Spectroscopy

Study of Hindered Internal Rotation in Some Substituted Amides by Nuclear Magnetic Resonance Spectroscopy PDF Author: William Chung-Tsing Tung
Publisher:
ISBN:
Category : Amides
Languages : en
Pages : 468

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Hindered Internal Rotation in Some Substituted N-methyl Thioureas by Proton Magnetic Resonance Spectroscopy

Hindered Internal Rotation in Some Substituted N-methyl Thioureas by Proton Magnetic Resonance Spectroscopy PDF Author: Erick L. May
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ISBN:
Category :
Languages : en
Pages : 35

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Nuclear Magnetic Resonance Studies of Solvent Effects on the Hindered Internal Rotation in N, N-disubstituted Amides Higher Alkyl Amides

Nuclear Magnetic Resonance Studies of Solvent Effects on the Hindered Internal Rotation in N, N-disubstituted Amides Higher Alkyl Amides PDF Author: A. G. Whittaker
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Category :
Languages : en
Pages : 37

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The temperature dependence of the chemical shifts due to hindered internal rotation was measured for diethylformamide, diethylacetamide, diisopropylformamide, diisopropylacetamide and for solutions of these molecules in various solvents. In all cases, the chemical shifts showed unusual behavior. Conventional methods coupled with certain approximations were used to calculate activation energies as estimates for the rotational barrier to the internal rotation about the N-CO bond. These values were found to lie in the range of 5 to 26 kcal/mole. However, it is difficult to determine the real significance of these numbers; the behavior of the chemical shifts was such that no underlying concepts could be developed that would correlate the observed results except for the conclusion that the solvent plays a dominant role in the relationship between chemical shift and temperature. (Author).

Quarterly Journal of the Chemical Society of London

Quarterly Journal of the Chemical Society of London PDF Author: Chemical Society (Great Britain)
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ISBN:
Category : Chemistry
Languages : en
Pages : 892

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Study of Hindered Internal Rotation in Some N-vinyl Substituted Amides by Nuclear Magnetic Resonance Spectroscopy

Study of Hindered Internal Rotation in Some N-vinyl Substituted Amides by Nuclear Magnetic Resonance Spectroscopy PDF Author: Douglas George Gehring
Publisher:
ISBN:
Category : Amides
Languages : en
Pages : 94

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NMR Studies of Hindered Internal Rotation and Association of N, N- Dimethylthiocarbamyl Chloride in Solvent Mixtures Containing Aromatic Groups

NMR Studies of Hindered Internal Rotation and Association of N, N- Dimethylthiocarbamyl Chloride in Solvent Mixtures Containing Aromatic Groups PDF Author: Shao-Ta Wu
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ISBN:
Category : Spectrum analysis
Languages : en
Pages : 506

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Study of Hindered Internal Rotation in Some Substitute Amides by Nuclear Magnetic Resonance Spectroscopy

Study of Hindered Internal Rotation in Some Substitute Amides by Nuclear Magnetic Resonance Spectroscopy PDF Author: William Chung-Tsing Tung
Publisher:
ISBN:
Category :
Languages : en
Pages : 211

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淡江學報

淡江學報 PDF Author:
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ISBN:
Category : Business
Languages : zh-TW
Pages : 326

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