Crystal structure and Hirshfeld surface analysis of ethyl (E)-4-(4-hy­droxy-3-meth­oxy-5-nitro­benzyl­idene)amino­benzoate

摘要

The title Schiff base compound, C17H16N2O6, has an E configuration with respect to the C=N bond, with a dihedral angle between the two benzene rings of 31.90 (12)°. There is an intra­molecular O—H⋯Onitro hydrogen bond present forming an S(6) ring motif. In the crystal, mol­ecules are linked by pairs of O—H⋯O hydrogen bonds, forming inversion dimers enclosing an R 2 ²(4) ring motif. The dimers are linked about an inversion centre by pairs of C—H⋯O hydrogen bonds, which enclose R 2 ²(22) loops, forming chains propagating along the [10] direction. Hirshfeld surface analysis and fingerprint plots show enrichment ratios for the H⋯H, O⋯H and C⋯H contacts, indicating a high propensity of such inter­actions in the crystal. Both the nitro group and the CH3–CH2–O– group are positionally disordered.