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Molecular Dynamics in Dimethylmalonic Acid Crystal as Studied by NMR

  • S. Idziak
  • N. Piślewski
Conference paper

Abstract

It has been shown especially by NMR methods that in cyclic dimers of carboxylic acids crystals two types of motion of hydrogen-bonded protons may occur:
  • simultaneous jumps of both protons along the asymmetric hydrogen bonds ( with small activation energy of 0.6 – 2 kcal/mole [1,2] )

  • flips of the whole dimeric unit about its long axis ( with large activation energy of 12 – 16 kcal/mole [3,4] )

PACS

7660 

References

  1. 1.
    W. Scheubel et. al., J. Magn. Reson., 80, 401, (1988)ADSGoogle Scholar
  2. 2.
    S. Idziak et. al., Chem. Phys., 111, 439, (1987)ADSCrossRefGoogle Scholar
  3. 3.
    S. Idziak, Mol. Phys., 68, 1335, (1989)ADSCrossRefGoogle Scholar
  4. 4.
    R. Imaoka et. al., Bull. Chem. Soc. Japan, 61, 1865, (1989)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • S. Idziak
    • 1
  • N. Piślewski
    • 1
  1. 1.Institute of Molecular PhysicsPolish Academy of SciencesPoznańPoland

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