N‐[Bis(2,4,6‐tri­methyl­phenoxy)­phos­phinoyl]‐P,P,P‐tris(2,4,6‐tri­methyl­phenoxy)phosphazene

The title compound, C₄₅H₅₅NO₆P₂, consists of an acyclic P=N—P(O) monophosphazene chain and five bulky 2,4,6‐tri­methyl­phenoxy side groups which predominantly determine the molecular shape. Although the P—N single 1.586 (3) Å] and P=N double 1.517 (3) Å] bonds are significantly different from each other, both are substantially shorter than the ideal P—N single bond. The P—N—P angle 146.0 (2)°] corresponds to the upper limit reported for acyclic phosphazene derivatives in the literature.