Acta Cryst. (2002). E58, o390-o392  [ doi:10.1107/S1600536802003963 ]

Racemic benzylphenylphosphine oxide

R. Kruszynski, W. Wieczorek and K. M. Pietrusiewicz

Abstract: All interatomic distances in the title compound, C₁₃H₁₃OP, can be considered normal. The crystal was twinned with a 71:29 participation of the two polar components. The phosphorus tetrahedron exhibits its usual deformation. The mid-part containing C_(phenyl)-P-C-C_(phenyl) is almost planar. The P=O bond makes angles of 22.2 (3) and 18.2 (2)° with the phenyl rings; the phenyl rings are inclined to each other at 4.9 (2)°. Two weak C-HO intermolecular hydrogen bonds are found in the structure. In this way, a two-dimensional hydrogen-bond net parallel to the bc plane is created. The possibility of -electron stacking was rejected because the neighbouring benzene rings in the crystal lattice are inclined to each other at 52.4 (2) and 61.2 (2)°. The geometrical parameters are compared to those reported in the literature for the solid-state structures of phosphine-substituted benzylphenylphosphine oxides.

Online 15 March 2002

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