A Porous Flexible Homochiral SrSi₂ Array of Single‐Stranded Helical Nanotubes Exhibiting Single‐Crystal‐to‐Single‐Crystal Oxidation Transformation

Abstract

Chiral nanotube: A flexible porous homochiral SrSi2 framework of two types of single-stranded helical nanotubes is presented (see structure). The CuI ions in the framework can be oxidized to CuII through single-crystal-to-single-crystal transformation forming a new, topologically equivalent phase, accompanied by an expansion in the unit cell volume of 12.51 %.