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New variants of (110)-oriented layered lead bromide perovskites, templated by formamidinium or pyrazolium

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  • Embargoed (until 12/08/22)

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Abstract

Four new hybrid lead(II) halide perovskites, γ-(FA)2PbBr4, (FA)1.5(AA)0.5PbBr4, (PY)(GA)PbBr4 and (PY)(TZ)PbBr4 ((FA)=formamidinium, (AA)=acetamidinium, (PY)=pyrazolium, (GA)=guanidinium and (TZ)=1,2,3-triazolium), adopt (110)-oriented layered perovskite structures. While (PY) is found to template the formation of ‘conventional’ (110)-oriented structure types (i. e. containing staggered [PbBr4] layers), (FA) is shown to facilitate formation of much less common variants based 3 : 1 ordering of the interlayer species or 3×2 step-like corrugation of the perovskite-like layers themselves.
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Original languageEnglish
JournalEuropean Journal of Inorganic Chemistry
VolumeEarly View
Early online date12 Aug 2021
DOIs
Publication statusE-pub ahead of print - 12 Aug 2021

    Research areas

  • Perovskites phases, Hybrid inorganic-organic compounds, Crystal structure, Crystal engineering, Layered compounds, Polymorphism

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