TY - JOUR
T1 - A Highly Disordered New Solid Phase Containing Isotropically Reorienting Cations in (CH3NH3)2CdBr4 Studied by *H NMR and Thermal Measurements
AU - Ishida, Hiroyuki
AU - Takagi, Kentaro
AU - Terashima, Mifune
AU - Nakamura, Daiyu
AU - Ikeda, Ryuicht
PY - 1990/10/1
Y1 - 1990/10/1
N2 - The 1H spin-lattice relaxation time, linewidth, second moment of 1HNMR absorption, differential thermal analysis, and differential scanning calorimctry of mcthylammonium tctrabromocado-matc(ll) crystals were studied. A new solid phase was found between 482 K and the melting point (493 K). Tlic lH NMR measurements revealed the presence of overall reorientation of methyl-ammonium cations in this phase. In the room temperature phase, 120 reorientational jumps of the CH, and NHj groups were detected.
AB - The 1H spin-lattice relaxation time, linewidth, second moment of 1HNMR absorption, differential thermal analysis, and differential scanning calorimctry of mcthylammonium tctrabromocado-matc(ll) crystals were studied. A new solid phase was found between 482 K and the melting point (493 K). Tlic lH NMR measurements revealed the presence of overall reorientation of methyl-ammonium cations in this phase. In the room temperature phase, 120 reorientational jumps of the CH, and NHj groups were detected.
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U2 - 10.1515/zna-1990-9-1018
DO - 10.1515/zna-1990-9-1018
M3 - Article
AN - SCOPUS:84911679577
VL - 45
SP - 1190
EP - 1192
JO - Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
JF - Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
SN - 0932-0784
IS - 9-10
ER -