C-H-N-O, C-x polyhedra, Phase transitions

• C-Cl-H-N-O
• C-Cu-H-N-O
• C-H-K-N-O
• C-H-N-Na-O
• temperature for congruent melting
• fusion
• decomposition temperature
• decomposition
• structural transitions
• chalcogen
• pnictogen
• organic
• non-disordered
• monoclinic
• triclinic
• orthorhombic
• tetragonal
• cubic