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Volume 63, 1967
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Relationship of structure and ionic mobility in solid MAg4I5

Abstract

The crystal structure of MAg4I5(M = K, Rb, NH4) is cubic with a= 11.2 ƅ, z= 4 and space group of the enantiomorphic pair P4132 and P4332. The locations of the Iā€“ and M+ ions have been deduced from symmetry and packing considerations. The Ag+ ions do not occupy distinct single sites, but are distributed randomly over a number of interstitial positions. This model is consistent with the expectionally high mobility of the Ag+ ions and the high entropy of formation of the compound. The absence of Na or Cs analogues is explained by the steric requirements of the proposed structure.

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Article type: Paper
DOI: 10.1039/TF9676302516
Citation: Trans. Faraday Soc., 1967,63, 2516-2521
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    Relationship of structure and ionic mobility in solid MAg4I5

    J. N. Bradley and P. D. Greene, Trans. Faraday Soc., 1967, 63, 2516
    DOI: 10.1039/TF9676302516

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