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ChemInform Abstract

The title compound, which is the compound with the lowest AgI content in the quasi-binary AgI—Ag₄P₂O₇ system, is prepared by melting a mixture of AgI and Ag₄P₂O₇ and subsequent annealing at 773 K (evacuated tube, 2 h). Ag₅IP₂O₇ crystallizes in the orthorhombic space group P2₁2₁2₁ with Z = 4. All silver ions are found to be coordinated by both diphosphate and iodide anions. Ag₅IP₂O₇ is a moderate Ag⁺ ion conductor with an activation energy of 0.28 eV and a room temp. conductivity of 3×10^-6 Ω^-1cm^-1. The Ag⁺ ion conduction pathways in this solid electrolyte are modeled by the bond-valence technique.

References

Volume31, Issue7

February 15, 2000

ChemInform Abstract: Silver-Ion Conduction Pathways in Ag₅IP₂O₇.

Abstract