title: 1,1'-Binaphthyl-2,2'-diyl benzyl-phos-phoramidate.
abstract: In the title compound, C(27)H(20)NO(3)P, the P atom exhibits a somewhat distorted PNO(3) tetra-hedral geometry, with the O-P-O angle for the binaphthyl fragment being 102.82 (6)°. The dihedral angle between the naphthyl ring systems is 59.00 (2)°. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops.
authors.affiliation: Department of Chemistry, IIT Madras, Chennai, TamilNadu,  India.
authors.forename: Ravikumar R
authors.initials: RR
authors.lastname: Gowda
authors.forename: Venkatachalam
authors.initials: V
authors.lastname: Ramkumar
authors.forename: Debashis
authors.initials: D
authors.lastname: Chakraborty