Na2NbO2AsO4, a new niobium monoarsenate

Authors
Hizaoui, K Jouini, N Driss, A Jouini, T
Citation
K. Hizaoui et al., Na2NbO2AsO4, a new niobium monoarsenate, ACT CRYST C, 55, 1999, pp. 1972-1974
Citations number
14
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
12
Pages
1972 - 1974
Database
ISI
SICI code
0108-2701(199912)55:<1972:NANNM>2.0.ZU;2-A
Abstract
The two-dimensional framework of disodium dioxoniobium arsenate is built up from infinite [NbO6] chains extending along the c axis, linked together by AsO4 tetrahedra. Each AsO4 tetrahedron is bonded to three different NbO6 o ctahedra, two of which belong to the same chain. The Na+ cations are locate d between the covalent [NbAsO6](2-) layers in hexagonal channels. The struc ture is compared with those of MM'XO6 (M = K, Tl; M' = Sb, Nb; X = P, As) a nd NaVOAsO4.