K3SbO9Se3 · 3 H2O: The First Crystalline Nanoporous Material with a Photo‐Semiconducting Host Structure

The natural mineral cetineite was prototype for the synthesis of the compound 1. Its nanoporous, template-free host structure is an idela object for numerous investigations. Electronic excitation and transport processes, for example, can be studied on this nanostructured semiconducting material. A part of the crystal structure is shown on the right.