Topotactic transition is a structural phase change in a matrix crystal lattice mediated by the
ordered loss/gain and rearrangement of atoms, leading to unusual coordination …

Abstract The Jahn–Teller effect, in which electronic configurations with energetically
degenerate orbitals induce lattice distortions to lift this degeneracy, has a key role in many …

In this review we describe recent advances in transition metal oxyhydride chemistry
obtained by topochemical routes, such as low temperature reduction with metal hydrides, or …

Topochemical reaction strategies offer an important low‐temperature (< 500° C) approach to
the conscious manipulation of various inorganic host materials, allowing access to …

Oxygen-ion conduction in transition-metal oxides is exploited in, for example, electrolytes in
solid-oxide fuel cells and oxygen-separation membranes, which currently work at high …

Fully oxygenated perovskite BaFeO3 containing unusually high-valence Fe4+ shows three
crystal polymorphs with the same chemical composition. The 3C-type BaFeO3 has a simple …

Iron-containing zeolites exhibit unprecedented reactivity in the low-temperature
hydroxylation of methane to form methanol. Reactivity occurs at a mononuclear ferrous …

Ionic evolution–induced phase transformation can lead to wide ranges of novel material
functionalities with promising applications. Here, using the gating voltage during ionic liquid …

We present a general strategy to synthesize metastable layered materials via topochemical
deintercalation of thermodynamically stable phases. Through kinetic control of the …

Abstract New (1-x) Bi0. 5Na0. 5TiO3+ x CaFeO3-δ solid solution compounds were
fabricated using a sol–gel method. The CaFeO3-δ materials were mixed into host Bi0. 5Na0 …