Chapt.13 NMR - NMR Chemical Shift Tables ( throughout R =...

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NMR Chemical Shift Tables ( throughout R = Csp 3 or H (for CH n R) ) CH 3 -CH 2 - or –CH- Atomic category 1 H shift n = 3 1 H shift n < 3 13 C shift RCH 3 0.7 – 1.1 0 – 32 RCH 2 R 1.2 – 1.65 15 – 40 R 3 CH 1.4 – 1.8 25 – 50 allylic-CH n 1.4 – 1.85 1.6 – 2.6 35 – 55 also C C-CH n R O=C CH n -R 1.95 – 2.3 2.2 – 2.7 20-30(CH 3 )-45 O=C  CH n -R 3.6 – 3.8 3.8 – 4.9 55 – 95 also other Csp 2 -OCH n C C H 2.3 – 2.7 65 – 90 N C CH n R 1.6 – 2.0 2.2 – 2.8 110-125 (C) benzylic –CH n R 2.2 – 2.4 2.5 – 3.1 35 – 60 R 2 N-CH n -(R) 2.2 – 2.5 2.4 – 3.2 27 – 50
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Chapt.13 NMR - NMR Chemical Shift Tables ( throughout R =...

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