Coplanar triangle 3-vertex, Values of electronic energy gap

• C-H-N-O
• O-Ti
• C-H-N
• C-Cu-H-N-O
• C-H-K-N-O
• chalcogen
• non-disordered
• transitional
• pnictogen
• monoclinic
• orthorhombic
• hexagonal
• triclinic
• tetragonal