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Nuclear magnetic resonance studies of internal rotation: IV —rotational barriers and conformation of phthalic amides
Author(s) -
Spassov S. L.,
Dimitrov V. S.,
Kantschovska I.
Publication year - 1974
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270060107
Subject(s) - phthalic acid , dipole , internal rotation , rotation (mathematics) , isophthalic acid , moment (physics) , chemistry , nuclear magnetic resonance , terephthalic acid , infrared , organic chemistry , physics , optics , mathematics , geometry , mechanical engineering , classical mechanics , polyester , engineering
The rotational barriers about the CN bond of the N,N,N′,N′‐tetramethyldiamides of phthalic, isophthalic and terephthalic acids have been determined by the iterative total line shape NMR method. Some evidence about the conformation of these compounds in solution has also been obtained by infrared and dipole moment studies.