N-(3,5-Di­methyl­phen­yl)-P,P-di­phenyl­phosphinic amide

In the title compound, C20H20NOP, the P atom, with a distorted tetra­hedral geometry, is attached to an O atom, two phenyl groups, and a 3,5-di­methyl­aniline group. The N—P—C [102.29 (12) and 108.97 (12)°] and C—P—C [107.14 (12)°] bond angles are all smaller than the ideal 109.5° tetra­hedral bond angle, whereas the O—P—C [113.07 (12) and 110.62 (12)°] and O—P—N [114.24 (13)°] angles are all larger than 109.5°. A weak intra­molecular C—H⋯O hydrogen bond helps to establish the mol­ecular conformation. In the crystal, the mol­ecules are linked by N—H⋯O hydrogen bonds, generating [001] chains.Unlabelled Image