New Crystalline Layered Zinc Phosphate with 10-Membered-Ring Channels Perpendicular to Layers

A novel layered zinc phosphate, [N<sub>2</sub>C<sub>6</sub>H<sub>12</sub>]<sub>2</sub>[Zn<sub>7</sub>H<sub>3</sub>(HPO<sub>4−<i>x</i></sub>)<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>]H<sub>2</sub>O, with unique 10-membered-ring ellipsoidal channels running perpendicularly to ladder-shaped tetrahedral layers, has been synthesized ionothermally via in situ generation of 1,4-diazabicyclo[2.2.2]octane.