Fig. 2: Coordination model of energetic materials.
From: First-principles calculations of solid-phase enthalpy of formation of energetic materials

a Coordination number-based elemental constituents for H, O, N, and C. Atomic configuration and coordination numbers in (b) 2,4,6-Trinitrotoluene (TNT) and c 2-Diazo-4,6-dinitrophenol (DINOL).