All 3-vertex, C-H-N, Trigonal

• C-H-N-O
• C-Fe-H-K-N
• Al-C-H-N-O-S
• B-C-F-H-N
• C-Fe-H-N-O-Zn
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• thermal expansion
• phase transitions
• organic
• pnictogen
• chalcogen
• transitional