Perovskite-related ReO3-type structures

Abstract

ReO 3-type structures can be described as ABX 3 perovskites in which the A-cation site is unoccupied. They therefore have the general composition BX 3 , where B is normally a cation and X is a bridging anion. The chemical diversity of such structures is very broad, ranging from simple oxides and fluorides, such as WO 3 and AlF 3 , to more complex systems in which the bridging anion is polyatomic, as in the Prussian blue-related cyanides such as Fe(CN) 3 and CoPt(CN) 6. The same topology is also found in metal-organic frameworks, for example In(Im) 3 (Im = imidazolate), and even the well-known MOF-5 structure, where the B-site cation is itself polyatomic. This remarkable chemical diversity gives rise to a wide range of interesting and often unusual properties, including negative thermal expansion (ScF 3), photocatalysis (CoSn(OH) 6), thermoelectricity (CoAs 3), and even a report of superconductivity in a phase that is controversially described as SH 3 with a doubly interpenetrating ReO 3 structure. We present a comprehensive account of this exciting family of materials and discuss current challenges and future opportunities in the area.

Intermarriage of Halide Perovskites and Metal‐Organic Framework Crystals

“…Precise size and shape matching between the guest and host cavity is critical for preserving the inherent lattice parameters of the perovskites without structure perturbation of either the host frameworks or the guest crystals. The ReO 3 ‐type structure is an interesting variation of perovskite with a vacant A‐site . MOFs with the ReO 3 ‐type structure are of particular interest: when long ligands such as carboxylates and azolates are used at the X‐sites, the inner space can be large enough to host guest components.…”

High-pressure phase transition of AB3-type compounds: case of tellurium trioxide

“…This geometry can be viewed as a perovskite-type ABX 3 structure with vacant A-sites and tilting of the BX 6 octahedra. The VF 3 polytype can be derived from the non-tilted ReO 3 structure (Pm 3m, Z ¼ 1) 22 by enforcing tilting of the octahedra (a À a À a À type tilting in Glazer's notation). 23 It's noteworthy to point out that phase I of TeO 3 is the only example of a trioxide adopting the VF 3 -type structure.…”

Understanding the Structural and Electronic Properties of Bismuth Trihalides and Related Compounds

“…For example, the most obvious structural candidate would be the ReO 3 -type structure, 22,23 which has a perovskite architecture with no cation in the cavity (i.e., MX 3 ).…”