Chalcogen, Deuterium, Structural transitions

• H-N-O-Se
• H-K-O-P
• Cl-H-N-Te
• Cs-H-O-P
• As-H-K-O
• temperature for structural transition
• pressure derivative of transition temperature
• pressure for structural transition
• deuterium
• chalcogen
• quaternary
• pnictogen
• nonmetal
• monoclinic
• orthorhombic
• tetragonal
• cubic
• trigonal