Dynamic disorder in solid tetrakis(trimethylstannyl)methane, C(SnMe3)4, investigated by one- and two-dimensional variable-temperature119Sn and13C NMR spectroscopy

Modes of molecular reorientation in solid tetrakis(trimethylstannyl)methane, C(SnMe3)4, have been investigated by one- and two-dimensional13C and119Sn static and magic-angle spinning nuclear magnetic resonance spectroscopy (NMR) in the temperature range from 150 to 290 K. Spectral lineshape fitting...

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Bibliographic Details
Published in:Applied magnetic resonance 1999-06, Vol.17 (2-3), p.385-398
Main Authors: Bernatowicz, P., Dinnebier, R. E., Helluy, X., Kümmerlen, J., Sebald, A.
Format: Article
Language:English
Subjects:
Methane
NMR spectroscopy
Single crystals
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Summary:Modes of molecular reorientation in solid tetrakis(trimethylstannyl)methane, C(SnMe3)4, have been investigated by one- and two-dimensional13C and119Sn static and magic-angle spinning nuclear magnetic resonance spectroscopy (NMR) in the temperature range from 150 to 290 K. Spectral lineshape fitting of one- and two-dimensional119Sn NMR experiments shows the pseudo-fivefold disorder previously observed by single-crystal X-ray diffraction on C(SnMe3)4 to be dynamic disorder (activation energy Ea ≅ 32 kJmol−1). A dynamic-disorder model where each tin atom in a C(SnMe3)4 molecule occupies the twenty sites of a nearly perfect pentagonal dodecahedron with equal probability agrees best with the experimental solid-state NMR results.
ISSN:0937-9347
1613-7507
DOI:10.1007/BF03162173