A Homonuclear Rotational Echo Double-Resonance Method for Measuring Site-Resolved Distance Distributions in I=1/2 Spin Pairs, Clusters, and Multispin Systems


  • This work was funded by the Deutsche Forschungsgemeinschaft, project SFB 858.


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In a new solid-state NMR method a double-quantum Hamiltonian based on a POST-C7 pulse sequence is used to recouple the homonuclear dipole–dipole interactions. Similar to the heteronuclear rotational echo double-resonance (REDOR) method, an analysis of the difference signal at short evolution times yields site-resolved summed squares of the dipole–dipole coupling constants.