NaMn(6)(P(2)O(7))(2)(P(3)O(10)) and KCd(6)(P(2)O(7))(2)(P(3)O(10))

J Bennazha; A El-Maadi; Ali Boukhari; Elizabeth M Holt

doi:10.1107/s0108270102006753

NaMn(6)(P(2)O(7))(2)(P(3)O(10)) and KCd(6)(P(2)O(7))(2)(P(3)O(10))

Acta Crystallogr C. 2002 Jun;58(Pt 6):i76-8. doi: 10.1107/s0108270102006753. Epub 2002 May 11.

Authors

J Bennazha¹, A El-Maadi, Ali Boukhari, Elizabeth M Holt

Affiliation

¹ Laboratoire de Chimie du Solide Appliqué, Laboratoire Associé Francophone N degrees 501, Université Mohammed V, Agdal, Av. Ibn Batouta, BP 1014, Rabat, Morocco.

PMID: 12050406
DOI: 10.1107/s0108270102006753

Abstract

The crystal structures of two new diphosphates, sodium hexamanganese bis(diphosphate) triphosphate, NaMn(6)(P(2)O(7))(2)(P(3)O(10)), and potassium hexacadmium bis(diphosphate) triphosphate, KCd(6)(P(2)O(7))(2)(P(3)O(10)), confirm the rigidity of the M(6)(P(2)O(7))(2)(P(3)O(10)) matrix (M is Mn or Cd) and the relatively fixed dimensions of the tunnels extending in the a direction of the unit cell. The compounds are isomorphous; the P(2)O(7)(4-) anion and the alkali metal cations lie on mirror planes. Bond-valence analysis of the bonding details of the atoms found within the tunnels permits a prediction of the conductivity.