title: 2,4,8,10,13-Penta-methyl-6-phenyl-13,14-dihydro-12H-6λ-dibenzo[d,i][1,3,7,2]dioxaza-phosphecin-6-thione.
abstract: In the title compound, C(25)H(28)NO(2)PS, the cyclo-decene ring exhibits a crown conformation. The two dimethyl-benzene rings which are fused symmetrically on either side of the ten-membered ring, make dihedral angles of 20.2 (1) and 18.0 (1)°. The phenyl ring substituted at P is perpendicular to the heterocyclic ring, making a dihedral angle of 88.4 (1)°. The crystal structure is stabilized by very weak intra-molecular C-H⋯O hydrogen bonding.
authors.forename: M
authors.initials: M
authors.lastname: Krishnaiah
authors.forename: V H H Surendra
authors.initials: VH
authors.lastname: Babu
authors.forename: A Uma Ravi
authors.initials: AU
authors.lastname: Sankar
authors.forename: C Naga
authors.initials: CN
authors.lastname: Raju
authors.forename: Rajni
authors.initials: R
authors.lastname: Kant