Lead (II) selenite halides Pb3(SeO3)2X2 (X = Br, I): Synthesis and crystal structure

Two lead selenite halides, Pb 3 (SeO 3 ) 2 Br 2 and Pb 3 (SeO 3 ) 2 I 2 , have been prepared by solid-phase synthesis and structurally characterized. These compounds are isotypic and can be considered 3D with a microporous framework composed of lead polyhedra (distorted Archimedean antiprisms formed by oxygen and halogen atoms). The framework contains channels oriented in the [010] direction. These channels contain selenium atoms, which are bound with framework oxygen atoms belonging to different lead polyhedra.