Distorted square anti-prism-a 8-vertex, H-K-O-P

• H-K-N-O-P
• As-H-K-Na-O-P
• H-K-O-P-Te
• Al-H-K-O-P
• thermal and thermodynamic properties
• electronic and electrical properties
• structural properties
• phase transitions
• permittivity (dielectric constant)
• pnictogen
• alkali
• chalcogen
• orthophosphate
• disordered
• tetragonal
• monoclinic
• triclinic
• orthorhombic
• hexagonal