Unusual nature of lanthanide chloride–alkali metal chloride M3LnCl6 compounds in the solid state
作者： Marcelle Gaune-Escard , Leszek Rycerz
DOI: 10.1016/J.JALLCOM.2005.04.049
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摘要: Abstract Thermodynamic and transport properties of M 3 LnCl 6 compounds (M = K, Rb, Cs; Ln = La, Ce, Pr, Nd) were determined experimentally. The results obtained clearly show that the can be divided into two groups, with having only high temperature modification cubic, elpasolite-type, crystal structure, in first one, both low-temperature (monoclinic, Cs BiCl -type) high-temperature (cubic, elpasolite-type) modifications second one. Within thermodynamic are well correlated their structure. These suggest different order–disorder mechanisms alkali metal cation sublattice whereas octahedra, forming anionic sublattice, retain normal lattice positions.
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M. Gaune-Escard, L. Rycerz, W. Szczepaniak, A. Bogacz, Calorimetric investigation of PrCl3NaCl and PrCl3KCl liquid mixtures Thermochimica Acta. ,vol. 236, pp. 59- 66 ,(1994) , 10.1016/0040-6031(94)80255-6
L. Rycerz, M. Gaune-Escard, Enthalpies of Phase Transitions and Heat Capacity of TbCl3 and Compounds Formed in TbCl3–MCl Systems (M=K, Rb, Cs) Journal of Thermal Analysis and Calorimetry. ,vol. 68, pp. 973- 981 ,(2002) , 10.1023/A:1016102925181
M. Gaune-Escard, L. Rycerz, W. Szczepaniak, A. Bogacz, Entropies of phase transitions in the M3LnCl6 compounds (MK, Rb, Cs; LnLa, Ce, Pr, Nd) and K2LaCl5 Journal of Alloys and Compounds. ,vol. 204, pp. 189- 192 ,(1994) , 10.1016/0925-8388(94)90090-6
M. O'keeffe, B. G. Hyde, The solid electrolyte transition and melting in salts Philosophical Magazine. ,vol. 33, pp. 219- 224 ,(1976) , 10.1080/00318087608225770
Marcelle Gaune-Escard, Leszek Rycerz, Solubility of Lanthanide Chlorides ( Ln Cl 3 ) in Alkali Metal Chlorides ( M Cl): Thermodynamics and Electrical Conductivity of the M 3 Ln Cl 6 Compounds Monatshefte Fur Chemie. ,vol. 134, pp. 777- 786 ,(2003) , 10.1007/S00706-002-0582-8
Hans J. Seifert, H. Fink, G. Thiel, Thermodynamic properties of double chlorides in the systems ACl/LaCl3 (A ≡ Na, K, Rb, Cs) Journal of the Less Common Metals. ,vol. 110, pp. 139- 147 ,(1985) , 10.1016/0022-5088(85)90315-7
M. Gaune-Escard, A. Bogacz, L. Rycerz, W. Szczepaniak, Calorimetric investigation of NdCl3MCl liquid mixtures (where M is Na, K, Rb, Cs) Thermochimica Acta. ,vol. 236, pp. 67- 80 ,(1994) , 10.1016/0040-6031(94)80256-4
Samiran Mitra, Jochen Uebach, Hans J. Seifert, Ternary Chlorides in the Systems ACl/TbCl3 (A = K, Rb, Cs) Journal of Solid State Chemistry. ,vol. 115, pp. 484- 489 ,(1995) , 10.1006/JSSC.1995.1163
Hans J. Seifert, Heinrich Fink, Bruno Baumgartner, Structure and Stability of the Low-Temperature Modification of Compounds Cs3LnCl6 (Ln = La-Gd) Journal of Solid State Chemistry. ,vol. 107, pp. 19- 26 ,(1993) , 10.1006/JSSC.1993.1318
H. -J. Seifert, H. Fink, J. Uebach, Properties of double chlorides in the systems ACl/NdCl3 (ANa-Cs) Journal of Thermal Analysis and Calorimetry. ,vol. 33, pp. 625- 632 ,(1988) , 10.1007/BF02138565