A new barbiturate-based centrosymmetric compound: Joint experimental/DFT investigation of the structural, spectroscopic and surface properties

Crystal structure and Hirshfeld surface analysis of 7-eth-oxy-5-methyl-2-(pyridin-3-yl)-11,12-di-hydro-5,11-methano-[1,2,4]triazolo[1,5-c][1,3,5]benzoxadiazo-cine

In the crystal, N—H⋯N hydrogen bonds link the mol­ecules into the supra­molecular chains propagating along the c-axis direction.

The title compound, C₁₉H₁₉N₅O₂, was prepared by the reaction of 3-amino-5-(pyridin-3-yl)-1,2,4-triazole with acetone and 2-hy­droxy-3-eth­oxy­benzaldehyde. It crystallizes from ethanol in a tetra­gonal space group, with one mol­ecule in the asymmetric unit. The 1,2,4-triazole five-membered ring is planar (maximum deviation = 0.0028 Å). The pyridine and phenyl rings are also planar with maximum deviations of 0.0091 and 0.0094 Å, respectively. In the crystal, N—H⋯N hydrogen bonds link the mol­ecules into supra­molecular chains propagating along the c-axis direction. Hirshfeld surface analysis and two-dimensional fingerprint plots have been used to analyse the inter­molecular inter­actions present in the crystal.