K4Ni7(AsO4)(6)

Authors
Ben Smail, R Driss, A Jouini, T
Citation
R. Ben Smail et al., K4Ni7(AsO4)(6), ACT CRYST C, 55, 1999, pp. 284-286
Citations number
11
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
3
Pages
284 - 286
Database
ISI
SICI code
0108-2701(19990315)55:<284:K>2.0.ZU;2-A
Abstract
The title compound, tetrapotassium heptanickel hexa-arsenate, has a three-d imensional open anionic framework built up from AsO4 tetrahedra and NiO6 oc tahedra sharing corners and edges. They delimit parallel tunnels, running a lone the a direction, where the K+ ions reside. This centrosymmetric framew ork appears to be similar to that of Ng(4)Ni(7)(PO4)(6) which is claimed to be noncentrosymmetric.