A high-silica zeolite (Si/Al= 7.1) with the STI framework topology, denoted TNU-10, has been synthesized in the presence of 1, 4-bis (N-methylpyrrolidinium) butane and Na+ cations as structure-directing agents, and its structure in the proton form has been refined against laboratory powder X-ray data in space group Fmmm (a= 13.533 (1) Å, b= 17.925 (2) Å, c= 17.651 (2) Å). The space group symmetry is supported by electron diffraction and energy ...
