Helical supra­molecular assembly of N²,N^2'-bis­[3-(morpholin-4-yl)prop­yl]-N¹,N^1'-(1,2-phenyl­ene)dioxalamide dimethyl sulfoxide monosolvate

In the title compound, C₂₄H₃₆N₆O₆·C₂H₆OS, the carbonyl groups are in an anti­periplanar conformation, with O=C-C=O torsion angles of 178.59 (15) and -172.08 (16)°. An intra­molecular hydrogen-bonding pattern is depicted by four N-H...O inter­actions, which form two adjacent S(5)S(5) motifs, and an N-H...N inter­action, which forms an S(6) ring motif. Inter­molecular N-H...O hydrogen bonding and C-H...O soft inter­actions allow the formation of a meso-helix. The title compound is the first example of a helical 1,2-phenyl­enedioxalamide. The oxalamide traps one mol­ecule of dimethyl sulfoxide through N-H...O hydrogen bonding. C-H...O soft inter­actions give rise to the two-dimensional structure.