^1H NMR Study of Molecular Dynamics of 4-apyH Cation under High Hydrostatic Pressure

• Authors: W. Medycki , J. Świergiel , R. Jakubas , K. Hołderna-Natkaniec
• Languages of publication: EN

Abstracts

EN

Polycrystalline [4-NH_2C_5H_4NH] SbCl_4 and [4-NH_2C_5H_4NH] SbCl_6 have been investigated by proton NMR methods between 120 K and 370 K under hydrostatic pressure of 0.1 and 520 MPa. Reduction in the dipolar second moment is interpreted in terms of cation reorientation. Activation energies characterizing the motion increase with increasing pressure.

Keywords

EN

77.84.-s; 76.60.-k

Discipline

• 76.60.-k: Nuclear magnetic resonance and relaxation(see also 33.25.+k Nuclear resonance and relaxation in atomic and molecular physics and 82.56.-b Nuclear magnetic resonance in physical chemistry and chemical physics; for structure determination using magnetic resonance techniques, see 61.05.Qr; for biophysical applications, see 87.80.Lg; for NMR in superconducting materials, see 74.25.nj)
• 77.84.-s: Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials(for nonlinear optical materials, see 42.70.Mp; for dielectric materials in electrochemistry, see 82.45.Un)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 108
• Issue: 1
• Pages: 161-164

Dates

published

2005-07

received

2005-04-24

Contributors

author

W. Medycki

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

J. Świergiel

• Institute of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

R. Jakubas

• Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland

author

K. Hołderna-Natkaniec

• Institute of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

References

• 1. R. Jakubas, Z. Ciunik, G. Bator, Phys. Rev. B, 67, 024103, 2003
• 2. J.H. van Vleck, Phys. Rev., 74, 1168, 1948
• 3. N. Bloembergen, E.M. Purcell, R.V. Pound, Phys. Rev., 73, 679, 1948
• 4. W. Medycki, J. Swiergiel, K. Holderna-Natkaniec, K. Jurga, R. Jakubas, Solid State NMR, 25, 129, 2004
• 5. J.S. Waugh, E.I. Fiedin, Sov. Phys. Solid State, 4, 1633, 1963
• 6. W. Medycki, J. Świergiel, K. Holderna-Natkaniec, K. Jurga, R. Jakubas, Solid State NMR, 24, 209, 2003

Identifiers

DOI

10.12693/APhysPolA.108.161