title: NaMn(6)(P(2)O(7))(2)(P(3)O(10)) and KCd(6)(P(2)O(7))(2)(P(3)O(10)).
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.
authors.affiliation: Laboratoire de Chimie du Solide Appliqué, Laboratoire Associé Francophone N degrees 501, Université Mohammed V, Agdal, Av. Ibn Batouta, BP 1014, Rabat, Morocco.
authors.forename: J
authors.initials: J
authors.lastname: Bennazha
authors.forename: A
authors.initials: A
authors.lastname: El-Maadi
authors.forename: Ali
authors.initials: A
authors.lastname: Boukhari
authors.forename: Elizabeth M
authors.initials: EM
authors.lastname: Holt