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Pulsed NMR Study of <TEX>$CuF_2$</TEX>
Pulsed NMR Study of $CuF_2$
Journal of the Korean Chemical Society. 1994. Sep, 38(9): 628-631
  • Published : September 00, 1994
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Lee, Cheol Ui
Lee, Chang Hun
Kim, Jun Hyeong
Kim, Gun Seok
Kim, Geon

Abstract
We have studied the paramagnetic $CuF_2$ using the techniques of pulsed nuclear magnetic resonance (NMR). The powder sample revealed two well-separated lines from the distinct $^{19}F$ sites at room temperature. One of the lines showed little frequency shift. However, the other showed a large frequency shift, suggesting electron transfers. Furthermore, the two sites have very short spin-lattice relaxation times $(T_1).$ The frequency-shifted site has the shorter $T_1$ than the unshifted one, reflecting the difference of the electron environments of the two sites.