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Inne
NMR and dilatometric studies on [N(CH3)4]3M2X9 (M=Sb, Bi; X=Cl, Br).
Autorzy
Rok wydania
1993
Czasopismo
Zeitschrift für Naturforschung Section A: A Journal of Physical Sciences
Numer woluminu
48A
Strony
748-752
DOI
10.1515/zna-1993-0702
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Thermal expansion studies on [N(CH3)4]3Sb-,Cl9 and [N(CH3)4]3Sb2Br9 are reported. The relaxation
times 'H T, were measured for [N(CH3)4]3Bi2Cl9, [N(CH3)4]3Sb2Br9, and [N(CH3)4]3Bi2Br9
in the temperature range 100-290 K. To interpret the 7\ data on [N(CH3)4]3Bi2Cl9 the method of
Tj calculation reported by Takeda et al. has been applied successfully. Two different, inequivalent
types of [N(CH3)4]3 cations for all tetramethylammonium crystals are found.
Słowa kluczowe
Tetramethylammonium crystals, Phase transitions, Thermal expansion, 'H spin-lattice relaxation time
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