Polymorphic form of 1,3,5-tris[(diphenylphosphine oxide)methyl]benzene acetonitrile solvate monohydrate

Abstract

The title compound, benzene-1,3,5-triyl­tris­methyl­enetris­(di­phenyl­phosphine oxide) aceto­nitrile solvate monohydrate, C45H39O3P3·C2H3N·H2O, forms two polymorphs: (I), which crystallizes in the triclinic space group P1, and (II), which crystallizes in the monoclinic space group Pn. The crystal and molecular structures of (I) were previously determined. The results of the crystal structure determination of (II) are presented here. The overall arrangement of two of the di­phenyl­phosphine oxide substituents is determined by strong hydrogen bonds Owater—H⋯Ooxide. All three P atoms adopt distorted tetrahedral geometry, with C—P—C angles equal to or smaller than tetrahedral and O—P—C angles greater than tetrahedral. All three di­phenyl­phosphine oxide substituents are stabilized by weak Cphenyl—H⋯Ooxide hydrogen bonds. For each substituent, one of the phenyl rings is almost coplanar with the P=O bond.