Dynamic-angle spinning of quadrupolar nuclei

K. T. Mueller; B. Q. Sun; G. C. Chingas; J. W. Zwanziger; T. Terao; A. Pines

doi:10.1016/0022-2364(90)90025-5

Dynamic-angle spinning of quadrupolar nuclei

K. T. Mueller
, B. Q. Sun
, G. C. Chingas
, J. W. Zwanziger
, T. Terao
, A. Pines

Chemistry

Research output: Contribution to journal › Article › peer-review

366 Scopus citations

Abstract

In dynamic-angle spinning (DAS), a sample spins around an axis inclined at an angle φ(t) with respect to the magnetic field such that the averages of P_n(cos φ) are zero. The simplest case is where φ(t) assumes two discrete values φ₁ and φ₂ (complementary DAS angles) such that the averages of P₂(cos φ) and P₄(cos φ) are zero, thereby removing second-order quadrupolar (and dipolar) broadening. Examples of DAS complementary angles are φ₁ = 37.38° and φ₂ = 79.19°. Experimental details for DAS experiments are provided and applications to sodium-23 and oxygen-17 NMR illustrate the enhanced resolution achieved by removing the second-order broadening inherent in magic-angle spinning.

Original language	English (US)
Pages (from-to)	470-487
Number of pages	18
Journal	Journal of Magnetic Resonance (1969)
Volume	86
Issue number	3
DOIs	https://doi.org/10.1016/0022-2364(90)90025-5
State	Published - Feb 15 1990

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10.1016/0022-2364(90)90025-5

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@article{1a5a64cc2e5d40759ba42a0f2171a0ee,

title = "Dynamic-angle spinning of quadrupolar nuclei",

abstract = "In dynamic-angle spinning (DAS), a sample spins around an axis inclined at an angle φ(t) with respect to the magnetic field such that the averages of Pn(cos φ) are zero. The simplest case is where φ(t) assumes two discrete values φ1 and φ2 (complementary DAS angles) such that the averages of P2(cos φ) and P4(cos φ) are zero, thereby removing second-order quadrupolar (and dipolar) broadening. Examples of DAS complementary angles are φ1 = 37.38° and φ2 = 79.19°. Experimental details for DAS experiments are provided and applications to sodium-23 and oxygen-17 NMR illustrate the enhanced resolution achieved by removing the second-order broadening inherent in magic-angle spinning.",

author = "Mueller, \{K. T.\} and Sun, \{B. Q.\} and Chingas, \{G. C.\} and Zwanziger, \{J. W.\} and T. Terao and A. Pines",

note = "Funding Information: We thank C. J. Lee and A. Samoson for helpful discussions, and B. F. Chmelka and J. Stebbins for preparation of oxygen-17 compounds. The probehead was built by H. Graetsch and C. Gaskins in the College of Chemistry machine shop. K.T.M. is an N. S. F. Graduate Fellow. This work was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Materials Science Division of the U. S. Department of Energy under Contract DE-AC03-76SF00098.",

year = "1990",

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doi = "10.1016/0022-2364(90)90025-5",

language = "English (US)",

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TY - JOUR

T1 - Dynamic-angle spinning of quadrupolar nuclei

AU - Mueller, K. T.

AU - Sun, B. Q.

AU - Chingas, G. C.

AU - Zwanziger, J. W.

AU - Terao, T.

AU - Pines, A.

N1 - Funding Information: We thank C. J. Lee and A. Samoson for helpful discussions, and B. F. Chmelka and J. Stebbins for preparation of oxygen-17 compounds. The probehead was built by H. Graetsch and C. Gaskins in the College of Chemistry machine shop. K.T.M. is an N. S. F. Graduate Fellow. This work was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Materials Science Division of the U. S. Department of Energy under Contract DE-AC03-76SF00098.

PY - 1990/2/15

Y1 - 1990/2/15

N2 - In dynamic-angle spinning (DAS), a sample spins around an axis inclined at an angle φ(t) with respect to the magnetic field such that the averages of Pn(cos φ) are zero. The simplest case is where φ(t) assumes two discrete values φ1 and φ2 (complementary DAS angles) such that the averages of P2(cos φ) and P4(cos φ) are zero, thereby removing second-order quadrupolar (and dipolar) broadening. Examples of DAS complementary angles are φ1 = 37.38° and φ2 = 79.19°. Experimental details for DAS experiments are provided and applications to sodium-23 and oxygen-17 NMR illustrate the enhanced resolution achieved by removing the second-order broadening inherent in magic-angle spinning.

AB - In dynamic-angle spinning (DAS), a sample spins around an axis inclined at an angle φ(t) with respect to the magnetic field such that the averages of Pn(cos φ) are zero. The simplest case is where φ(t) assumes two discrete values φ1 and φ2 (complementary DAS angles) such that the averages of P2(cos φ) and P4(cos φ) are zero, thereby removing second-order quadrupolar (and dipolar) broadening. Examples of DAS complementary angles are φ1 = 37.38° and φ2 = 79.19°. Experimental details for DAS experiments are provided and applications to sodium-23 and oxygen-17 NMR illustrate the enhanced resolution achieved by removing the second-order broadening inherent in magic-angle spinning.

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DO - 10.1016/0022-2364(90)90025-5

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AN - SCOPUS:45149137102

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VL - 86

SP - 470

EP - 487

JO - Journal of Magnetic Resonance (1969)

JF - Journal of Magnetic Resonance (1969)

IS - 3

ER -

Dynamic-angle spinning of quadrupolar nuclei

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