Chalcogen, Deuterium, Nonmetal, Temperature for structural transition

• H-N-O-Se
• Cl-H-N-Te
• H-K-O-P
• As-H-K-O
• H-N-O-S
• nonmetal
• chalcogen
• deuterium
• quaternary
• pnictogen
• monoclinic
• orthorhombic
• tetragonal
• cubic
• triclinic