Non-disordered, Tetraoxoselenate, Temperature for structural transition

• H-N-O-Se
• K-O-Se
• H-O-Rb-Se
• Cs-H-O-Se
• K-Na-O-Se
• chalcogen
• tetraoxoselenate
• non-disordered
• nonmetal
• quaternary
• monoclinic
• triclinic
• orthorhombic
• trigonal