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Updated: Aug 14, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Spin-7/2 nutation and Hahn-echo amplitudes in model compounds and application to the tetrahedral cluster Co4(CO)12
P Kempgens1, J Hirschinger, P Granger
1Institut de chimie, UMR 50 CNRS, Bruker Spectrospin, Université Louis Pasteur, Strasbourg, France.
Abstract:
Spin-7/2 central line intensities are calculated for any ratio of the quadrupolar coupling constant to the radiofrequency field for both one-pulse and two-pulse Hahn-echo experiments and tested by 59Co NMR on the model compounds, Na3[Co(NO2)6] and trans-[Co(en)2(NO2)2]NO3. The Hahn-echo sequence is then used to obtain the quadrupole coupling constant and asymmetry parameter on a powder sample of Co4(CO)12. This technique is found to be particularly useful when the NMR spectrum is broad and featureless.
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