13C NMR spectroscopy

CH3OH

(CH3)2C=O

CH3-CHO

1.2.1Natural Abundance 13C Spectrum of Compound 1

1H decouplingC-H NOET1 relaxation

1.2.2Coupled Spectrum (Gated Decoupling)

Normal 13C

Inverse gated decouplingQuantitative spectrum

1.2.4Decoupled Spectrum: Proton Decoupling

H

H

2JCCH =5.4 Hz

3JCCCH=7.9 Hz

1.2.4Decoupled Spectrum: Proton and Phosphorus Decouplin g

3JCOOP

1JCH + 3JCOOP

1JCH + 2JCCH + 3JCOOP

1.2.5APT, DEPT, INEPT

1.331P

1.3.3Coupled Spectrum (P–P Coupling)