COMPLEX COPPER(II) FLUORIDES .15. THE TERNARY-SYSTEM BAF2-CUF2-SCF3

Citation
P. Gredin et al., COMPLEX COPPER(II) FLUORIDES .15. THE TERNARY-SYSTEM BAF2-CUF2-SCF3, Zeitschrift fur anorganische und allgemeine Chemie, 619(6), 1993, pp. 1088-1094
Citations number
20
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur anorganische und allgemeine Chemie
ISSN journal
00442313 → ACNP
Volume
619
Issue
6
Year of publication
1993
Pages
1088 - 1094
Database
ISI
SICI code
0044-2313(1993)619:6<1088:CCF.TT>2.0.ZU;2-5
Abstract
The liquid-solid phase diagram of the binary system BaF2-ScF3 is estab lished by D.T.A. and radiocrystallography. Three fluorides are disclos ed: Ba3Sc2F12, Ba5Sc3F19 and a cubic high temperature phase Ba1-xScxF2 +x (X = 0.17), the structure of which derives from that of BaF2. A sol id solution between BaF, and ScF3 is also evidenced at high temperatur e. The ternary system BaF2-CuF2-ScF3 is investigated by radiocrystallo graphy and an isothermal section at 670-degrees-C is given. It shows t he existence of four phases: a complex quaternary fluoride Ba10Cu12ScF 47, two ''polytypic'' phases the structure of which derives from that of BaCuF4 and a tetragonal solid solution Ba5Sc3-xCuxF19-x with 0 less -than-or-equal-to x less-than-or-equal-to 1.