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1H and 19F magnetic resonance imaging of solid paramagnetic compounds using large magnetic field gradients and Hahn echoes

โœ Scribed by Edward W Randall

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
163 KB
Volume
8
Category
Article
ISSN
0926-2040

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โœฆ Synopsis

1 H and 19 F spatially resolved echo trains of a number of paramagnetic solids with apparent magnetic moments as high as 10 Bohr magnetons have been successfully obtained in the 58 T m y1 fringe-field gradient of a 9.4 T superconducting magnet ลฝ . ลฝ . ลฝ . by the use of Hahn echoes. Complexes studied include hydrates of Ni II , Fe III , Mn II , and the anhydrous fluorides of ลฝ . ลฝ . ลฝ . Ti III , Co II and Mn II . Tris 6,6-7,7-8,8,8 heptafluoro-2,2-dimethyl-3,5octane dionato complexes of several lanthanides, Eu, Dy, Ho and Yb, have also been imaged. Additionally, 1 H relaxation time measurements have been obtained at 28 MHz with conventional techniques, and several additional T values have been obtained in the stray field for both 1 H and 19 F. 2

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