A 13C NMR study of hindered rotation in
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Iwona Wawer
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Article
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1987
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John Wiley and Sons
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English
β 388 KB
Rates of rotations about the C-N' partial double bond in a series of six N',N' penta-and six N',N'-hexa-methylene-Nz-substituted-phenyformamidines were determined from 13C DNMR line shape analysis. Electron accepting substituents at the phenyl ring increase the barrier to rotation, and electron don