Related Experiment Video
Updated: Jun 1, 2026

Applications of Liquid-Chromatography Tandem Mass Spectrometry in Natural Products Research: Tropane Alkaloids as a Case Study
Published on: March 8, 2024
Characterisation of triacetone triperoxide (TATP) conformers using LC-NMR
Nicolas Haroune1, Andrew Crowson, Bill Campbell
1chemiSPEC, University of Sunderland, Darwin Building, Wharncliffe Street, Sunderland, SR1 3SD, United Kingdom.
This study uses liquid chromatography-nuclear magnetic resonance (LC-NMR) to separate and characterize two known conformers of the explosive triacetone triperoxide (TATP). The technique allows for the study of TATP conformer re-equilibration kinetics.
Area of Science:
- Analytical Chemistry
- Forensic Chemistry
- Physical Chemistry
Background:
- Two distinct conformers of the explosive triacetone triperoxide (TATP) have been previously reported.
- The increasing use of TATP in improvised explosive devices necessitates advanced analytical methods.
- Characterization of explosive materials is crucial for forensic investigations and security.
Purpose of the Study:
- To demonstrate the capability of LC-NMR for separating and characterizing individual TATP conformers.
- To investigate the structural consistency of TATP conformers using NMR data.
- To study the kinetics of TATP conformer re-equilibration.
Main Methods:
- Liquid Chromatography-Nuclear Magnetic Resonance (LC-NMR) was employed for separation and characterization.
- Nuclear Magnetic Resonance (NMR) spectroscopy was used to analyze the separated conformers.
- Kinetic studies were performed by monitoring re-equilibration using NMR.
Main Results:
- LC-NMR successfully separated the two previously identified TATP conformers.
- The obtained NMR data confirmed the proposed structures of the TATP conformers.
- The re-equilibration process between TATP conformers was monitored and its kinetics were studied.
Conclusions:
- LC-NMR is an effective technique for the detailed analysis of TATP conformers.
- Understanding TATP conformer dynamics is important for its forensic analysis.
- Advanced analytical techniques are vital for addressing the security challenges posed by TATP.
Related Concept Videos
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
Proton (¹H) NMR: Chemical Shift
Absorption signals of all the protium nuclei in a...
NMR and Mass Spectroscopy of Carboxylic Acids
While α protons of carboxylic acids absorb at 2–2.5 ppm, β protons absorb further upfield.
Carboxylic acids are easily identified by dissolving them in deuterium oxide, which results in a rapid exchange of the acidic protons with deuterium. This leads to the disappearance of the acidic...
NMR Spectroscopy of Aromatic Compounds

