K2NbAlO2[(As,Nb)O-4](2), isostructural with KTiOPO4

Authors
Nakagawa, T Matsumoto, T Chani, VI Fukuda, T
Citation
T. Nakagawa et al., K2NbAlO2[(As,Nb)O-4](2), isostructural with KTiOPO4, ACT CRYST C, 55, 1999, pp. 1391-1393
Citations number
9
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
55
Year of publication
1999
Part
9
Pages
1391 - 1393
Database
ISI
SICI code
0108-2701(19990915)55:<1391:KIWK>2.0.ZU;2-S
Abstract
The title compound, potassium niobium aluminium arsenate (KNAA), is isostru ctural with KTiOPO4 (KTP). In KNAA, the site corresponding to the Ti1 sites of KTP is occupied mostly by Nb atoms, the Ti2 site is occupied predominan tly by A1 atoms, and the As1 and As2 tetrahedral sites are occupied mostly by As atoms. The M1O(6) octahedron is more distorted and the M2O(6) octahed ron is less distorted than that of KTP.