Solvent effects in nuclear magnetic reso
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William W. Paudler; Sharon A. Humphrey
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Article
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1971
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John Wiley and Sons
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English
β 195 KB
## Abstract The benzeneβinduced solvent effects upon the proton chemical shifts of various pyrazines, pyrimidines and their __N__βoxides are described. Larger chemical shift effects, implying closer benzeneheterocycle association, are noted in the __N__βoxides as compared to the nonβoxidized hetero