IMG_0001_NEW_0012_001

IMG_0001_NEW_0012_001 - R-C.H 9.0 - r0. Ol"...

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APPROXIMATE CHEMICAL SHIFT RANGES (PPM) FOR SELECTED PROTONS A Approximate Range (PPM) Approximate Range (PPM) R-CH3 0.7 - 1.3 I R-N.C.H ll 2.2 - 2.9 R-CHz-R 1.2 - 1.4 I R-S.C.H I 2.0 - 3.0 R3CH 1.4 - 1.7 'l t-c-H I 2.0 - 4.0 n-E=t-E-u I t.6 - 2.6 I Br-C-H I 2.7 - 4.1 oo ltr ltt R-C-C-H, H-C-C-H I 2.1 -2.4 I cl-c-H I 3.1 - 4.r OO pl lll RO-C-C-H, HO-C.C.H I I 2.t -2.5 o Il R-S.O.C-H gl ca.3.0 I N=C-C-H I 2.1 - 3.0 I RO-C-H, HO-C-r{ I I 3.2 -3.8 o+ " 2.3 -2.7 o ttt R-C-O-C-H i 3.5 - 4.8 R-C=C-H L7 -2.1 I olN-c-H I 4.t - 4.3 R-S-H 1.0 - 4.0b I F.C.H I 4.2 - 4.8 R-N.H I 0.5 - 4.0b ll R-C=C-H 4.5 -6.s R.O-H 0.5 - s.0b o." 6.5 - 8.0 o-H 4.0 - 7.0b o il
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Unformatted text preview: R-C.H 9.0 - r0. Ol" 3.0 - 5.0b o T R.C.OH I 1.0 - 12.0 1l R-C-N-H I 2.1 -2.5h a For hydrogens shown n, -f-r, if the hydrogen is of a methyl group rhe shift is generally at the low end of the range, if H is in a methyleni: group it is in the intermediate range, and for a methine group the shift is typically at the high end of the range b the chemical shift of these groups is variable, depending not onty on the chemical environment, but also on concentration, temDeralure and solvent...
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