Relaxation of an AX2 nuclear spin system. Amplitude modulated pulses for excitation of longitudinal multispin ordered states
Zieger, Günter ; Sterk, Heinz ; Bermel, W.
College Park, Md. : American Institute of Physics (AIP)
Published 1994
College Park, Md. : American Institute of Physics (AIP)
Published 1994
| ISSN: |
1089-7690
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
Chemistry and Pharmacology
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| Notes: |
The 31P and 1H nuclear magnetic resonance (NMR) longitudinal relaxation behavior of the hypophosphite ion (H2PO2)aitch-theta is investigated in D2O solution at various temperatures and two magnetic field strengths. Among a number of different well known methods of preparing the magnetization, a new simple procedure is described. This technique allows the excitation of exclusive longitudinal two- or three-spin order by taking advantage of amplitude modulated pulses. By using the semiclassical Redfield approach and transformation into a normal mode basis, the experimental data are interpreted in terms of an axially symmetric phosphorus chemical shift anisotropy (CSA) tensor and anisotropic rotational diffusion.
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| Type of Medium: |
Electronic Resource
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| URL: |