Our REDOR Box splits a single X-channel (e.g. of a Bruker H—X MAS probe) into a double-resonance circuit to enable X—Y Rotational Echo Double Resonance (REDOR) NMR experiments, e.g.13C—23Na or 6Li—2H. The REDOR Box is of course also suitable for experiments that are related with the REDOR experiment, e.g. Transferred-Echo Double-Resonance (TEDOR) NMR.


redor box 1


redor box 2 redor box 3


Technical data

  • Up to 1.5 kW RF pulse power (50 µs)
  • VSWR < 1.2
  • For frequency differences between 1 MHz and 25 MHz (max.)
  • Efficiency of up to 80 % compared to the single X-channel
  • Compatible and tested for Bruker H—X MAS probes
  • Compatibility to other probes to be discussed
  • Easy installation/mounting directly to the probe
  • Exchangeable coupling coils inside the box
  • Enables huge experimental flexibility to achieve desired splitting

Available for

  • 200 to 600 MHz magnets ("Large" REDOR Box)
  • 700 to 900 MHz magnets ("Small" REDOR Box)


redor box 4

Splitting of the wobble curve via the REDOR Box: network analyser (left and middle) and Bruker Topspin (right).


Further readings / applications

  • F. A. Perras et al. Characterizing Substrate-Surface Interactions on Alumina-Supported Metal Catalysts by Dynamic Nuclear Polarization-Enhanced Double-Resonance NMR Spectroscopy. J. Am. Chem. Soc. 2017, 139, 2702.
  • C. Wang et al. Direct Detection of Supramolecular Reaction Centers in the Methanol-to-Olefins Conversion over Zeolite H-ZSM-5 by 13C–27Al Solid-State NMR Spectroscopy. Angew. Chem. Int. Ed. 2016, 55, 2507.
  • F. Pourpoint et al. Measurement of Aluminum–Carbon Distances Using S-RESPDOR NMR Experiments. Chem. Phys. Chem. 2012, 13, 3605.
  • D. Hirsemann et al. Covalent Grafting to μ-Hydroxy-Capped Surfaces? A Kaolinite Case Study. Chem. Mater. 2011, 23, 3152.