Report No xxxx - Instytut Fizyki JÄ drowej PAN
Report No xxxx - Instytut Fizyki JÄ drowej PAN
Report No xxxx - Instytut Fizyki JÄ drowej PAN
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The neutron scattering (IINS, QNS, NPD) study [3,5] in the temperature range of 20–<br />
277 K give also evidence of the fast stochastic reorientational motions of NH 3 in all phases of<br />
[Zn(NH 3 ) 4 ](BF 4 ) 2 ,and [Co(NH3) 6 ](ClO 4 ) 3 measured by us in presented above NMR studies.<br />
A<br />
15<br />
15<br />
20<br />
Co(NH 3<br />
) 6<br />
(ClO 4<br />
) 3<br />
20<br />
[Zn(NH ) ](BF )<br />
3 4 4 2<br />
2<br />
)<br />
T]<br />
M 2<br />
(10 -8 T<br />
1H<br />
10 10<br />
5<br />
5<br />
10 -4 T)<br />
-8 2<br />
T ]<br />
1H<br />
δH (<br />
M 2<br />
[10<br />
15 15<br />
10<br />
5<br />
5<br />
10<br />
dH [10 -4<br />
T c3<br />
T c2 T c1<br />
0 0<br />
100 150 200 250 300<br />
Temperature [K]<br />
0<br />
T c<br />
= 103.25K<br />
0<br />
100 150 200 250 300<br />
T [K]<br />
Fig. 1. Temperature dependence of the slope line width (δH) - open symbols - and the second<br />
moment (M 2 ) - full symbols - of the 1 H NMR line in [Zn(NH 3 ) 4 ](BF 4 ) 2 and<br />
[Co(NH 3 ) 6 ](ClO 4 ) 3<br />
References:<br />
[1] A. Migdał-Mikuli, E. Miku li, Ł. He tmańczyk, E . Ściesińska, J. Ściesiński, S. Wróbel,<br />
N. Górska, J. Mol. Struct. 596 (2001) 123.<br />
[2] E. Mikuli, A. M igdał-Mikuli, N. Górska, S. Wróbel, J. Ściesiński, E. Ściesińska, J. Mol.<br />
Struct. 651-653 (2003) 519.<br />
[3] A. Migdał-Mikuli, E. Mikuli, Ł. Hetmańczyk, I. Natkaniec, K. Hołdern-Natkaniec,<br />
W. Łasocha, J. Solid St. Chem. 174 (2003) 357.<br />
[4] J.H. van Vleck, Phys. Rev. 74 (1948) 1168.<br />
[5] N. Górska, E. Mikuli, I. Natkaniec, K. Hołderna-Natkaniec, to be published.<br />
109
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