Perovzalates : a family of perovskite-related oxalates
Date
14/10/2019Metadata
Show full item recordAbstract
A family of hybrid Perovskite-oxalates (“Perovzalates”) of general composition AILi3MII(C2O4)3 (A = K+, Rb+, Cs+; M = Fe2+, Co2+, Ni2+) are presented. All eight new compounds are isostructural with the previously reported examples NH4Li3Fe(C2O4)3 and KLi3Fe(C2O4)3, crystallising in the rhombohedral space group Rc, with a ∼11.3–11.6 Å, c ∼14.8–15.2 Å. In contrast to other families of “hybrid perovskites” such as the formates, these compounds can be regarded as closer structural relatives to inorganic (oxide) perovskites, in the sense that they contain direct linkages of the octahedral sites via bridging oxygen atoms (of the oxalate groups). It is of note, therefore, that monoatomic cations as large as Cs+ can be incorporated into the perovskite-like A sites of this structure type, which is not feasible in traditional ABO3 perovskites; indeed CsLi3Ni(C2O4)3 appears to exhibit the ‘mostly tightly bound’ 12-coordinate Cs+ ion in an oxide environment, according to a bond valence analysis.
Citation
Clulow , R , Bradford , A J , Lee , S L & Lightfoot , P 2019 , ' Perovzalates : a family of perovskite-related oxalates ' , Dalton Transactions , vol. 48 , no. 38 , pp. 14461-14466 . https://doi.org/10.1039/c9dt03149a
Publication
Dalton Transactions
Status
Peer reviewed
ISSN
1477-9226Type
Journal article
Rights
Copyright © 2019 The Author(s). This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1039/C9DT03149A
Description
Authors would like to thank the University of St Andrews (studentship to AJB) and the EPSRC (doctoral studentship to RC: DTG012 EP/K503162-1) for funding.Collections
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