Arene–Arene Stacking in 6,6'-Diphenyl-3,3'-bi-1,2,4,5-tetrazine and 6-Phenyl-1,2,4,5-tetrazine-3-carbaldehyde Benzoylhydrazone Monohydrate

Despite the demands of the stronger hydrogen-bonding inter­actions present in the crystal structures of the title compounds, C₁₆H₁₀N₈ and C₁₆H₁₂N₆O.H₂O, T-shaped and shifted π-stacked arrangements of aromatic moieties are preferred, leading to herringbone and/or π-stacked crystal-packing motifs. Therefore, in both these compounds the crystal packing is in accordance with the theory of arene–arene interactions being dominated by electrostatics.

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