Crystal structure of hexa­methyl 4,4′,4′′,4′′′,4′′′’,4′′′’’-[(1,3,5,2λ(5),4λ(5),6λ(5)-tri­aza­triphosphinine-2,2,4,4,6,6-hexa­yl)hexa­kis­(­oxy)]hexa­benzoate

The title compound, C(48)H(42)N(3)O(18)P(3), achieved in a two-step synthesis, comprises a cyclo­triphosphazene core and six 4-meth­oxy­carbonyl­phen­oxy groups. Each P atom is attached to two substituents located up and down with respect to the plane of the phosphazene ring, the central P(3)N(3) ring having a twist-boat conformation. The three O/P/O planes and five of the six benzene rings are nearly perpendicular to the mean plane through the phosphazene ring [dihedral angles = 82.98 (8)–88.92 (8)°], while the remaining benzene ring forms a dihedral angle of 25.72 (7)°. The crystal packing is stabilized by van der Waals inter­actions only.