title: Target-aimed synthesis of anion-deficient perovskites.
abstract: The brownmillerite-type A 2B 2O 5 structure is considered as a parent one, giving rise to different derivatives: layered double perovskites, A-site and anion-vacancy-ordered perovskites, and the perovskite-like compounds with crystallographic shear planes. The structural relationships and synthesis pathways for these classes of materials are discussed with particular attention to the ordering at the A or B sublattices, anion vacancy ordering, and their mutual interaction.
authors.affiliation: Department of Chemistry, Moscow State University, Moscow 119991, Russia.
authors.forename: Evgeny V
authors.initials: EV
authors.lastname: Antipov
authors.forename: Artem M
authors.initials: AM
authors.lastname: Abakumov
authors.forename: Sergey Ya
authors.initials: SY
authors.lastname: Istomin