FURTHER COMPOUNDS OF THE BA6ND2AL4O15 TYP E - BA4ND4ZN3PTO15 AND BA4EU4ZN3PTO15

Authors
SFREDDO O MULLERBUSCHBAUM H
Citation
O. Sfreddo et H. Mullerbuschbaum, FURTHER COMPOUNDS OF THE BA6ND2AL4O15 TYP E - BA4ND4ZN3PTO15 AND BA4EU4ZN3PTO15, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 53(5-6), 1998, pp. 628-630
Citations number
17
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
53
Issue
5-6
Year of publication
1998
Pages
628 - 630
Database
ISI
SICI code
0932-0776(1998)53:5-6<628:FCOTBT>2.0.ZU;2-Z
Abstract
The compounds Ba4Nd4Zn3PtO15 (I) and Ba4Eu4Zn3PtO15 (II) crystallize w ith hexagonal symmetry, space group C-6v(4)-P6(3)mc, (I): a = 11.719(1 ), c = 6.778(1) Angstrom, (II): a = 11.654(1), c = 6.778(1) Angstrom, Z = 2. Both belong to the Ba6Nd2. Al4O15 type when replacing 2Ba(2+) b y 2Ln(3+) and 4Al(3+) by 3Zn(2+) + Pt4+. The tetrahedrally coordinated Al3+ is substituted by Zn2+, the octahedrally one by Pt4+. Due to the similarity of X-ray scattering of Ba2+ and Ln(3+) the ordered replace ment of Ba2+ by Ln(3+) has been proven by calculations of the Coulomb terms of lattice energy.