Riou

• Co-H-O-P-V
• Cd-H-O
• H-O-P-V
• Cu-H-N-O
• Cl-Cu-H-O
• structural properties
• optical properties
• magnetic properties
• optical absorption
• phase transitions
• chalcogen
• transitional
• pnictogen
• quaternary
• non-disordered
• monoclinic
• trigonal
• tetragonal
• triclinic
• cubic