Alkali, Chalcogen, Nonmetal, Pressure for structural transition

• Cs-H-O-S
• H-K-O-P
• I-K-O
• H-Li-N-O-S
• Li-O-V
• chalcogen
• alkali
• nonmetal
• non-disordered
• quaternary
• monoclinic
• trigonal
• orthorhombic
• cubic
• tetragonal