Comparative studies in the 19 F and 1 H NMR chemical shifts in 2, 2-difluorohalogenated propanes

…, K Ohnishi, H Okamoto, S Morikawa

文献索引：Tanuma; Ohnishi; Okamoto; Morikawa Journal of Fluorine Chemistry, 1996 , vol. 76, # 1 p. 45 - 48

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被引用次数: 7

摘要

Fluorine-19 chemical shifts were compared with 1H chemical shifts in CF3-CF2-R versus CH3-CF2-R, CF2Cl-CF2-R versus CH2Cl-CF2-R and CFCl2-CF2-R versus CHCl2-CF2-R, where R is a substituted methyl group containing all combinations of H, Cl and F. A good linear relationship was found between the 19F and 1H NMR chemical shifts. Conformational analysis using MNDO calculations was applied to the CF3-CF2-R and CH3-CF2-R series ...