Bis(4‐methylphenylsulfonyl)amino 4‐methylbenzenesulfonate: a new member of the (RSO2)ON(SO2R)2 family

The title compound, C₂₁H₂₁NO₇S₃, consists of an SO₂ON(SO₂)₂ central fragment and three terminal 4‐methylphenyl groups each attached at a sulfonyl S atom. The most obvious characteristic is the presence of two nearly face‐to‐face benzene rings, with their centroids separated by a rather short distance 3.7808 (18) Å], but with a rather slanted relative orientation dihedral angle = 20.63 (13)°] so as to preclude a strong intramolecular π–π interaction. The third benzene ring is nearly perpendicular to the other two dihedral angles = 71.62 (14) and 70.4 (13)°]. The packing of the structure is directed by two C—H...O hydrogen bonds involving aromatic H atoms (methyl H atoms are strictly non‐interacting), which define chains running in the 100] direction. These one‐dimensional chains evolve parallel to each other and exhibit no significant lateral interactions.