1H and 19 F NMR Studies on Molecular Motions in Two Solid Phases of t-Butylammonium Tetrafluoroborate
1998 ◽
Vol 53
(9)
◽
pp. 796-800
◽
Keyword(s):
Abstract Differential thermal analysis (DTA), differential scanning calorimetry (DSC), and the temperature dependence of the spin-lattice relaxation time (T1) and the second moment (M2) of 1H and 19F NMR were studied in (CH3)3CNH3BF4 and (CH3)3CND3BF4 . DTA and DSC revealed a solid-solid phase transition at 219 K for (CH3)3CNH3BF4 and at 221 K for (CH3)3CND3BF4 . The motions of cations and anions in the two solid phases were studied by T1 and M2 experiments. The motional modes of the ions and their motional parameters were determined.
1992 ◽
Vol 47
(11)
◽
pp. 1115-1118
◽
1990 ◽
Vol 45
(9-10)
◽
pp. 1190-1192
◽
1981 ◽
Vol 45
(6)
◽
pp. 1381-1387
◽
1989 ◽
Vol 44
(4)
◽
pp. 300-306
◽