Controlling the Regioselectivity of Topochemical Reduction Reactions Through Sequential Anion Insertion and Extraction.

ABSTRACT: Topochemical reduction of the n = 2 Ruddlesden-Popper oxide, LaSr₂CoRuO₇, yields LaSr₂CoRuO_5.3, a phase containing (Co/Ru)O₄ squares which share corners to form 1D infinite double-chains. In contrast, fluorination of LaSr₂CoRuO₇ yields the oxyfluoride LaSr₂CoRuO_5.5F_3.5, which can then be reduced to form LaSr₂CoRuO_4.5F_1.5. This reduced oxyfluoride is almost isoelectronic with LaSr₂CoRuO_5.3, but LaSr₂CoRuO_4.5F_1.5 has a crystal structure in which the (Co/Ru)O₄ squares are connected into 2D infinite sheets. Thus, by following a fluorinate-then-reduce reaction scheme, the regiochemistry of

SUBMITTER: Wernert R 

PROVIDER: S-EPMC12535380 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature