In situ formation and solid-state oxidation of a triselenane NSeN-pincer MOF

Abstract

Controlled partial decomposition of 2-selenonicotinic acid in the presence of Co²⁺ or Ni²⁺ resulted in the in situ formation of an unusual MOF based on triselenane ligands (RSeSeSeR) coordinated to M²⁺ centers as NSeN-pincers. Post-synthetic oxidation by treatment with aqueous H₂O₂ facilitates its solid-state conversion into a RSeO₂⁻ molecular coordination complex, which was tracked via powder X-ray diffraction studies and by single-crystal structural resolution of the final product.