Octet

Octet / Carbon NMR Shift Table

C≡C (alkyne)

¹³C NMR: a C≡C (alkyne) carbon appears at δ 65-90 ppm. More shielded than expected.

Carbon NMR Shift Table details

Environment

C≡C (alkyne)

Chemical Shift Range

65-90

Notes

More shielded than expected

This is one row of the Spectroscopy sheet - print all 19 ¹³C NMR shifts on one page.

Carbon NMR Shift Table

Related Content

13C NMR chemical shift ranges by carbon environment.

R-CH₃

¹³C NMR: a R-CH₃ carbon appears at δ 0-30 ppm. Primary carbon.

R₂CH₂

¹³C NMR: a R₂CH₂ carbon appears at δ 15-55 ppm. Secondary carbon.

R₃CH

¹³C NMR: a R₃CH carbon appears at δ 20-60 ppm. Tertiary carbon.

R₄C

¹³C NMR: a R₄C carbon appears at δ 30-45 ppm. Quaternary carbon.

C-X (halide)

¹³C NMR: a C-X (halide) carbon appears at δ 10-75 ppm. Depends on halogen.

C-O (alcohol, ether)

¹³C NMR: a C-O (alcohol, ether) carbon appears at δ 50-90 ppm.

Study guides

Related study guides

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

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