CONTRA: Improving the performance of dynamic investigations in natural abundance organic solids by mirror-symmetric constant-time CODEX

Detlef Reichert, Ovidiu Pascui, Tito J. Bonagamba, Peter Belton, Asher Schmidt, Eduardo Ribeiro deAzevedo

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


We present a minor but essential modification to the CODEX 1D-MAS exchange experiment. The new CONTRA method, which requires minor changes of the original sequence only, has advantages over the previously introduced S-CODEX, since it is less sensitive to artefacts caused by finite pulse lengths. The performance of this variant, including the finite pulse effect, was confirmed by SIMPSON calculations and demonstrated on a number of dynamic systems.
Original languageEnglish
Pages (from-to)141-147
Number of pages7
JournalJournal of Magnetic Resonance
Issue number1
Publication statusPublished - 2008

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