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Titolo:
The system KCl/ErCl(3)and the modifications of compounds K(3)LnCl(6) (Ln =Ce-Lu, Y)
Autore:
Dudek, H; Seifert, HJ;
Indirizzi:
Schles Univ Katowice, Inst Phys, Katowice, Poland Schles Univ Katowice Katowice Poland owice, Inst Phys, Katowice, Poland Univ Gesamthsch Kassel, D-34109 Kassel, Germany Univ Gesamthsch Kassel Kassel Germany D-34109 l, D-34109 Kassel, Germany
Titolo Testata:
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
fascicolo: 10, volume: 627, anno: 2001,
pagine: 2317 - 2322
SICI:
0044-2313(200110)627:10<2317:TSKTMO>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
GER
Soggetto:
TERNARY CHLORIDES; CRYSTAL-STRUCTURES; RARE-EARTHS; CS; RB; ND; K2LACL5; HALIDES; A3MX6; LN=LA;
Keywords:
potassium hexachloro lanthanides; phase diagrams; crystal structures; thermodynamic properties;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Seifert, HJ Hoh 7, D-35619 Braunfels, Germany Hoh 7 Braunfels Germany D-35619 , D-35619 Braunfels, Germany
Citazione:
H. Dudek e H.J. Seifert, "The system KCl/ErCl(3)and the modifications of compounds K(3)LnCl(6) (Ln =Ce-Lu, Y)", Z ANORG A C, 627(10), 2001, pp. 2317-2322

Abstract

The phase diagram of the system KCl/ErCl3 was investigated by DTA and XRD. Two compounds exist: KEr2Cl7 incongruently and K3ErCl6 congruently melting. Their thermodynamic functions for the formation from KCI and ErCl3 were determined by solution calorimetry and emf vs T measurements in a galvanic cell for solid electrolytes. Both compounds are stable down to 0 K. - K3ErCl3 exists in three modifications. The structure of T-K3ErCl6 was determined by single crystal measurements: S.G. P2(1)/c; Z = 4; a = 1309.8(5), b = 767.1(3), c = 1252.6(4) pm, beta = 109.94(2)degrees. - A survey of all known results on compounds K(3)LnCl(6) reveals, that from Ln = Ce to Ln = Ho they only are stable at higher temperatures, > 521 degreesC (Ce) and > -27 degreesC (Ho), resp.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 13:01:40