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NMR shifts - O=CHR(aldehydes 9.0-10.0 R O OH(Carboxylic...

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Typical 1 H NMR absorptions in ( δ ) CH 3 0.8-1.0 H 0.5-0 CH 2 1.2-1.5 CH 1.4-1.7 R 2 C=CH–CH n (allylic hydrogens) 1.8-2.3 O=CH—CH n 2.0-2.5 Ph-CH n (benzylic hydrogens) 2.3-2.8 = Ph C–H ~ 2.5 R 2 N—CH n 2.0-3.0 I–CH n 2.8-3.3 Br–CH n 2.8-3.5 Cl–CH n 3.1-3.8 F–CH n 4.1-4.7 O–CH n 3.1-3.8 R 2 C=CH 2 (terminal alkene) 5.0 C=CH (internal alkene) 4.5-5.5 Ph-H aromatic hydrogens) 7-0-7.5
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Unformatted text preview: O=CHR (aldehydes) 9.0-10.0 R O OH (Carboxylic acids) 10-13 These values are approximate! There will be examples outside these ranges. Typical 13 C NMR absorptions in ( δ ) CH 3 0-30 CH 2 15-55 CH 25-55 quaternary C 30-40 (very weak) C=C 80-145 C C 70-90 128.7 substituted 110-170 C—O 50-90 C—N 40-60 C—F 70-80 C—Cl 25-50 C—Br 10-40 C—I -20-10 R 2 C=O 190-220 RXC=O (X = O or N) 150-180...
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