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0.9 to 2
hydrogen on sp3 hybridized carbon
~0.9
1° aliphatic
~1.3
2° aliphatic
~1.7
3° aliphatic
1.5 to 2.5
Z = C, O, N
~2.5
acetylenic
2.5 to 4
Z = N, O, X
hydrogen on hetero carbon
4.5 to 6
alkene
6.5 to 8
aromatic
9 to 10
aldehydic
10 to 12
carboxylic
1 to 5
alcohol or amine hydrogen
2H quartet + 3H triplet
ethyl
1H septet + 6H doublet
isopropyl
9H singlet
isobutyl
1H singlet
OH
oxygen of alcohol or ether
+2.5
oxygen of ester
+3
carbonyl
+1