C-H-N-O, Chalcogen, Pnictogen, Fusion, Monoclinic

• C-Cu-H-N-O
• C-Cl-H-N-O
• C-H-N-Na-O
• C-H-N-O-S
• temperature for congruent melting
• chalcogen
• pnictogen
• organic
• non-disordered