1-(2,4-Di­nitro­phen­yl)-2-[(E)-2,4,5-tri­meth­oxy­benzyl­idene]hydrazine

The title compound, C₁₆H₁₆N₄O₇, is close to being planar, with a dihedral angle of 3.15 (11)° between the benzene rings. The meth­oxy groups at the ortho- and para-positions of the 2,4,5-tri­meth­oxy­phenyl group are almost coplanar with the ring [deviations of the C atoms = 0.017 (2) and −0.025 (2) Å, respectively], whereas the meta-meth­oxy group deviates slightly [C-atom displacement = 0.162 (2) Å]. Both the ortho- and para-nitro groups are close to being coplanar with their attached ring [dihedral angles = 7.81 (12) and 8.56 (11)°, respectively]. An intra­molecular N—H...O hydrogen bond generates an S(6) ring motif. In the crystal, inversion dimers linked by pairs of N—H...O hydrogen bonds involving the same H atom as the intra­molecular bond generate R₂²(12) loops. The dimers are linked by weak C—H...O inter­actions into sheets parallel to the (10-4) plane and the sheets are stacked by π–π inter­actions, with a centroid–centroid distance of 3.5974 (14) Å.

N-(4-Acetyl­phen­yl)-4-meth­oxy­benzene­sulfonamide

The title compound, C₁₅H₁₅NO₄S, was obtained by the condensation of 4-amino­aceto­phenone and 4-meth­oxy­benzene­sulfonyl chloride. The dihedral angle between the benzene rings is 86.56 (9)° and the mol­ecule has an approximate V-shaped conformation. The C atom of the meth­oxy group is roughly coplanar with its attached ring [deviation = 0.177 (3) Å], as is the methyl C atom of the acetyl group with its ring [deviation = 0.065 (2) Å]. An intra­molecular C—H...O inter­action generates an S(6) ring. In the crystal, N—H...O and C—H...O hydrogen bonds link the mol­ecules into [010] chains. Weak C—H...π inter­actions are also observed.