1H NMR study of molecular dynamics of acetylcholine chloride
Świergiel J.1, Piślewski N.2,4, Medycki W.2, Hołderna-Natkaniec K.1, Milia F.3
- 1Department of Physics, Adam Mickiewicz University, Poznań, Poland
- 2Institute of Molecular Physics, Polish Academy of Sciences, Poznań, Poland
- 3NCSR Demokritos, Institute of Materials Science, Aghia Paraskevi Attikis, Athens, Greece
- 4Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
Applied Magnetic Resonance, 26 (3), pp.357-364, 2004
DOI::
Abstract:
The longitudinal relaxation time T1 and the second moment M 2 of 1H nuclear magnetic resonance line in a wide temperature range have been measured for acetylcholine chloride. Two different types of the methyl groups reorientation occurred. The first type was the hindered rotation of the methyl group denoted as C(1)H3 about the threefold symmetry axis. The second type was the reorientation of the trimethyl group -N(CH3)3 around the pseudo C′3 axis of C(6)-N(7) bond, which accompanied the standard C3 motion of the methyl group. The Dunn-McDowell model was applied to analyze the dynamics observed.
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