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Magic angle spinning technique second-order quadrupolar interaction

Hq is the quadmpolar interaction. It is only present for nuclei with I>Vz, which are around 70% of active NMR nuclei. This interaction is also orientahon-dependent however, only the first-order quadrupolar interaction can be averaged out by spinning the sample around the magic angle (MAS)-the second-order quadrupolar interaction cannot be leveled out by this technique, resulting in very broad line shapes or sometimes in invisible sites for SS NMR [109]. In the last... [Pg.439]

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Magic angle spinning

Magic angle spinning technique

Quadrupolar

Quadrupolar interaction second-order

Quadrupolar interactions

Quadrupolar order

Quadrupolar spins

Spin interactions

Spin ordering

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