A pulsed free decay nuclear magnetic resonance system has been used to study the 14N nuclear quadrupole resonance in N, N1‐dimethylpiperazine. The quadrupole frequencies and spin‐lattice relaxation times are measured from 77°K up to the melting point (∼276°K). The relaxation times are determined by the rotation of the CH3 group (120–200°K) and the hindered rotation of the whole molecule (above 200°K). The spin relaxation of the liquid state is also reported.
REFERENCES
1.
2.
3.
4.
5.
6.
7.
N.
Bloembergen
, E. M.
Purcell
, and R. V.
Pound
, Phys. Rev.
73
, 679
(1948
).8.
9.
C. P. Slichter, Magnetic Resonance (Harper & Row, New York, 1963), p. 47.
10.
Same as Ref. 9, p. 138.
11.
12.
13.
A. Abragam, Nuclear Magnetism (Oxford U.P. , Oxford, England, 1961), Chap. 8.
This content is only available via PDF.
© 1974 American Institute of Physics.
1974
American Institute of Physics
You do not currently have access to this content.
