Related Experiment Video
Updated: May 30, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Electron paramagnetic resonance studies of nitrogen interstitial defects in diamond
S Felton1, B L Cann, A M Edmonds
1Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Abstract:
We report on electron paramagnetic resonance (EPR) studies of nitrogen doped diamond that has been (15)N enriched, electron irradiated and annealed. EPR spectra from two new nitrogen containing [Formula: see text] defects are detected and labelled WAR9 and WAR10. We show that the properties of these defects are consistent with them being the ⟨001⟩-nitrogen split interstitial and the ⟨001⟩-nitrogen split interstitial-⟨001⟩-carbon split interstitial pair, respectively. We also provide an explanation for why these defects have previously eluded discovery.
Related Concept Videos
Other Nuclides: 31P, 19F, 15N NMR
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a high...
¹H NMR of Labile Protons: Deuterium (²H) Substitution
NMR Spectroscopy Of Amines
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
¹³C NMR: ¹H–¹³C Decoupling
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...

