distortionless enhancement by polarization transfer

acronym: DEPT
https://doi.org/10.1351/goldbook.08331
Measurement method of nuclear magnetic resonance spectroscopy used for determining the presence of primary, secondary and tertiary heteronuclei.
Notes:
  1. DEPT is a 1D technique which is used typically for A13A2213C.
  2. The DEPT experiment for A13A2213C differentiates between CH, CHA2 and CHA3 groups by variation of the selection angle parameter (the flip angle of the final A1A221H pulse): 135 ∘ angle gives all CH and CHA3 in a phase opposite to CHA2; 90 ∘ angle gives only CH groups, the others being suppressed; 45 ∘ angle gives all carbons with attached protons with the same phase.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 686 [Terms] [Paper]
Citation: 'distortionless enhancement by polarization transfer' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08331 RIS BibTex EndNote
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