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Inorganic co-crystal formation and thermal disproportionation in a dicyanometallate 'superperovskite'

Abstract

We report the synthesis, crystal structure, and thermally-driven phase transformation of the dicyanometallate superperovskite co-crystal [NBu4]Mn[Au(CN)2]3.[NBu4]ClO4. This phase is understandable in terms of the conventional ABX3 perovskite structure type, but with the NBu4+ A-site cation displaced onto the perovskite cage face and 1-dimensional AX' chains included within framework pores opened up by these displacements. On heating to 380 K, the co-crystal disproportionates into its two inorganic components: a bcs-structured ABX3 phase and [NBu4]ClO4. This system illustrates a new type of structural and phase complexity accessible to dicyanometallate perovskites.

  • This article is part of the themed collection: Perovskites
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Publication details

The article was received on 29 Dec 2018, accepted on 12 Apr 2019 and first published on 12 Apr 2019


Article type: Communication
DOI: 10.1039/C8CC10277E
Citation: Chem. Commun., 2019, Accepted Manuscript

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    Inorganic co-crystal formation and thermal disproportionation in a dicyanometallate 'superperovskite'

    J. A. Hill, C. Murray, C. C. Tang, P. Thygesen, A. L. Thompson and A. Goodwin, Chem. Commun., 2019, Accepted Manuscript , DOI: 10.1039/C8CC10277E

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