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 language | English |
|---|---|
| Pages (from-to) | 201-207 |
| Number of pages | 7 |
| Journal | Chemical Physics Letters |
| Volume | 496 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - 20 Aug 2010 |