Chalcogen, Cyanide, Transitional, Values of electronic energy gap

• C-Cu-H-N-O
• C-Fe-H-K-N-O
• C-Fe-H-N-O
• C-Fe-H-N-Ni-O
• C-H-K-N-O-Pt
• transitional
• pnictogen
• cyanide
• chalcogen
• orthorhombic
• monoclinic
• cubic
• hexagonal
• triclinic