Octet

Octet / H Nmr Table

α to C=O (ketone/aldehyde)

¹H NMR: protons in a α to C=O (ketone/aldehyde) environment appear at δ 2.0-2.5 ppm. Deshielded by carbonyl.

H Nmr Table details

Environment

α to C=O (ketone/aldehyde)

Chemical Shift Range

2.0-2.5

Notes

Deshielded by carbonyl

This is one row of the Spectroscopy sheet - print all 23 ¹H NMR shifts on one page.

H Nmr Table

Related Content

Source collection

R-CH₃ (primary alkyl)

¹H NMR: protons in a R-CH₃ (primary alkyl) environment appear at δ 0.9-1.0 ppm. Most shielded.

R₂CH₂ (secondary alkyl)

¹H NMR: protons in a R₂CH₂ (secondary alkyl) environment appear at δ 1.2-1.4 ppm.

R₃CH (tertiary alkyl)

¹H NMR: protons in a R₃CH (tertiary alkyl) environment appear at δ 1.4-1.7 ppm.

Allylic (C=C-CH)

¹H NMR: protons in a Allylic (C=C-CH) environment appear at δ 1.6-2.0 ppm. Adjacent to C=C.

Benzylic (Ar-CH)

¹H NMR: protons in a Benzylic (Ar-CH) environment appear at δ 2.2-2.5 ppm. Adjacent to aromatic ring.

Propargylic (C≡C-CH)

¹H NMR: protons in a Propargylic (C≡C-CH) environment appear at δ 1.8-2.2 ppm.

Study guides

Related study guides

Free, in-depth guides that put this material in context.

Reading NMR basicsIR spectroscopy basicsIdentify functional groupsAll guides