H-N-O-Se, N-x polyhedra

• C-H-N-O-Se-U
• Cu-H-N-O-Se
• H-N-O-P-Se
• H-N-O-S-Se
• thermal and thermodynamic properties
• electronic and electrical properties
• phase transitions
• structural properties
• structural transitions
• chalcogen
• pnictogen
• non-disordered
• tetraoxoselenate
• monoclinic
• triclinic
• orthorhombic
• trigonal
• hexagonal