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Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

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Tris(2-methoxy-phen-yl)phosphine.

Omar Bin Shawkataly, Mohd Aslam A Pankhi, Imthyaz Ahmed Khan

Acta Crystallographica. Section E, Structure Reports Online

|May 18, 2011

Summary

The crystal structure of a novel organophosphorus compound exhibits molecular disorder, with the molecule occupying two positions. This structural complexity is stabilized by weak carbon-hydrogen to pi-system interactions.

Area of Science:

Crystallography
Materials Science
Organic Chemistry

Background:

Understanding molecular structure and interactions is crucial in materials science.
Organophosphorus compounds exhibit diverse chemical properties and applications.
Crystal disorder can significantly influence material properties.

Purpose of the Study:

To elucidate the crystal structure of the title compound, C(21)H(21)O(3)P.
To characterize the nature and extent of molecular disorder within the crystal lattice.
To identify stabilizing interactions within the crystal structure.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
Refinement of crystallographic data was performed to establish atomic positions and occupancies.

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Published on: September 5, 2014

Analysis of intermolecular interactions, including C-H⋯π interactions, was conducted.

Main Results:

The title compound, C(21)H(21)O(3)P, was found to be disordered over two crystallographic positions with nearly equal occupancies (0.503(1) and 0.497(1)).
Significant variations in dihedral angles between the three benzene rings were observed between the major and minor disordered components.
The crystal structure is stabilized by a network of C-H⋯π intermolecular interactions.

Conclusions:

The study reveals a complex disordered crystal structure for the title organophosphorus compound.
The observed disorder and specific dihedral angles provide insights into the conformational flexibility of the molecule in the solid state.
C-H⋯π interactions play a key role in stabilizing the crystal packing.