Author: William Chung-Tsing TungPublisher:
ISBN:
Category :
Languages : en
Pages : 211
Book Description
Study of Hindered Internal Rotation in Some Substitute Amides by Nuclear Magnetic Resonance Spectroscopy
Author: William Chung-Tsing TungPublisher:
ISBN:
Category :
Languages : en
Pages : 211
Book Description
Study of Hindered Internal Rotation in Some Substituted Amides by Nuclear Magnetic Resonance Spectroscopy
Author: James Calvin WoodbreyPublisher:
ISBN:
Category : Amides
Languages : en
Pages : 420
Book Description
Study of Hindered Internal Rotation in Some N-vinyl Substituted Amides by Nuclear Magnetic Resonance Spectroscopy
Author: Douglas George GehringPublisher:
ISBN:
Category : Amides
Languages : en
Pages : 94
Book Description
Study of Hindered Internal Rotation in Some Substituted Amides by Nuclear Magnetic Resonance Spectroscopy
Author: William Chung-Tsing TungPublisher:
ISBN:
Category : Amides
Languages : en
Pages : 468
Book Description
A Study of Molecular Structure and Internal Rotation in Amides by Nuclear Magnetic Resonance Spectroscopy
Author: Lester Reinhardt IsbrandtPublisher:
ISBN:
Category : Amides
Languages : en
Pages : 292
Book Description
Nuclear Magnetic Resonance Studies of Solvent Effects on the Hindered Internal Rotation in N, N-disubstituted Amides Higher Alkyl Amides
Author: A. G. WhittakerPublisher:
ISBN:
Category :
Languages : en
Pages : 37
Book Description
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).
Study of Hindered Rotation in Amides, Thioamides, and Amidinium Ions by Nuclear Magnetic Resonance Spectroscopy
Author: Violet JonasPublisher:
ISBN:
Category : Acetamide
Languages : en
Pages : 470
Book Description
Author: Torbjörn Drakenberg
Author: Torbjörn Drakenberg
Author: Frank H. Hund