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Issue 17, 2006
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Quadrupolar coupling selective cross-polarization in solid state NMR

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Abstract

A new strategy is presented for achieving selective heteronuclear polarization transfers from half-integer quadrupolar spins in magic-angle spinning (MAS) NMR. By combining cross-polarization with a recently introduced RAPT pulse sequence that selectively excites the signal of a half-integer quadrupolar nucleus based on its quadrupolar coupling constant magnitude, we demonstrate that hetero-nuclei in its close proximity may be selectively excited. Selective 23Na → 1H polarization transfers are demonstrated in Na2MoO4·2H2O, Na2HPO4·2H2O and a mixture of NaHCO3 and Na2HPO4·2H2O.

Graphical abstract: Quadrupolar coupling selective cross-polarization in solid state NMR

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Article information


Submitted
18 Jan 2006
Accepted
24 Feb 2006
First published
21 Mar 2006

Phys. Chem. Chem. Phys., 2006,8, 1994-1999
Article type
Paper

Quadrupolar coupling selective cross-polarization in solid state NMR

M. Edén, Phys. Chem. Chem. Phys., 2006, 8, 1994
DOI: 10.1039/B600757K

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