title: 6-Bromo-2-(4-nitro-phen-oxy)-3-(1-phenyl-ethyl)-3,4-dihydro-1,3,2-benzoxaza-phosphinine 2-oxide.
abstract: In the title compound, C(21)H(18)BrN(2)O(5)P, the six-membered oxaza-phosphinine ring is in a twist-boat conformation. One of the phosphoryl O atoms is in an equatorial configuation while the other is axial with respect to the oxaza-phosphinine ring. The mean planes of the benzene ring to which the nitro group is attached and the phenyl ring form a dihedral angle of 83.5 (1)°. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains along [100].
authors.forename: V H H
authors.initials: VH
authors.lastname: Surendra Babu
authors.forename: M
authors.initials: M
authors.lastname: Krishnaiah
authors.forename: K
authors.initials: K
authors.lastname: Srinivasulu
authors.forename: C Naga
authors.initials: CN
authors.lastname: Raju
authors.forename: B
authors.initials: B
authors.lastname: Sreedhar