Indirect high-resolution detection for quadrupolar spin-3/2 nuclei in dipolar HMQC solid-state NMR experiments

Julien Trébosc, Olivier Lafon, Bingwen Hu, Jean Paul Amoureux

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

We present a new kind of NMR pulse sequences to observe heteronuclear correlation (HETCOR) specifically between spin-1/2 and spin-3/2 nuclei with isotropic resolution on the quadrupolar channel. These methods, called HMQC-ST, feature a STMAS filter during the evolution period of the HMQC scheme. Compared to existing HETCOR techniques involving quadrupolar nuclei, the HMQC-ST combines high-resolution and high efficiency and allows indirect detection of spin-3/2 nuclei via sensitive nuclei. We study analytically and using simulations how through-bond and through-space HMQC-ST perform compared to regular HMQC sequence. HMQC-ST potential is demonstrated experimentally by recording through-space HETCOR 2D spectra of Na2HPO4 and NaH 2PO4.

Original languageEnglish
Pages (from-to)201-207
Number of pages7
JournalChemical Physics Letters
Volume496
Issue number1-3
DOIs
StatePublished - 20 Aug 2010

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