Disproportionation of Co²⁺ in the Topochemically Reduced Oxide LaSrCoRuO₅.

ABSTRACT: Complex transition-metal oxides exhibit a wide variety of chemical and physical properties which are a strong function the local electronic states of the transition-metal centres, as determined by a combination of metal oxidation state and local coordination environment. Topochemical reduction of the double perovskite oxide, LaSrCoRuO₆ , using Zr, yields LaSrCoRuO₅ . This reduced phase contains an ordered array of apex-linked square-based pyramidal Ru³⁺ O₅ , square-planar Co¹⁺ O₄ and octahedral Co³⁺ O₆ units, consistent with the coordination-geometry driven disproportionation of Co²⁺ . Coordination-geometry driven disproportionation of d⁷ transition-metal cations (e.g. Rh²⁺

SUBMITTER: Liang Z 

PROVIDER: S-EPMC10952446 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature