H[NH4]3[SO4]2 mS52 15, Quaternary

• H-N-O-S
• H-O-Rb-Se
• H-K-O-S
• H-O-Rb-S
• Cs-H-O-Se
• electronic and electrical properties
• structural transitions
• phase transitions
• temperature for structural transition
• structural properties
• quaternary
• chalcogen
• nonmetal
• non-disordered
• ferroelastic
• monoclinic
• triclinic