The title compound, C38H48NOP, isolated from the reaction of (2-diphenylphosphanyl-4, 6- di-tert-butyl) phenol with 2, 6-diisopropylphenyl azide at 273 K, can act as an N, O-bidentate ligand. Crystal structure analysis shows a deviation from ideal tetrahedral symmetry around the P atom. The molecule exists as a monomer in the solid state, whose conformation is stabilized via multiple intramolecular hydrogen bonds. Geometric parameters from both ...