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Related Experiment Video

Updated: May 21, 2026

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

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

Published on: November 22, 2016

Hydrogen bis[tris(4-fluorophenyl)phosphane oxide] triiodide.

Farhad Haghjoo¹, Nicholas A Barnes, Robin Pritchard

¹School of Chemistry, University of Manchester, Brunswick Street, Manchester, England. farhad.haghjoo@postgrad.manchester.ac.uk

Acta Crystallographica. Section C, Crystal Structure Communications

|June 7, 2012

Summary

This summary is machine-generated.

This study details the crystal structure of a novel compound, revealing hydrogen-bonded dimers forming channels that contain triiodide anions. Unusual short inter-ion distances and crystal twinning were observed.

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

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Area of Science:

Crystal Engineering
Inorganic Chemistry
Solid-State Chemistry

Background:

The study investigates the supramolecular assembly and crystal structure of a specific organophosphorus-iodine compound.
Understanding the packing of anions and cations in crystal lattices is crucial for predicting material properties.

Purpose of the Study:

To elucidate the crystal structure of C(36)H(25)F(6)O(2)P(2)(+)·I(3)(-).
To analyze the hydrogen bonding interactions, anion chain formation, and crystallographic characteristics, including twinning and disorder.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
Computational modeling was used to address issues of nonmerohedral twinning and residual electron density.

Main Results:

Hydrogen-bonded dimers of [{(p-FC(6)H(4))(3)PO}(2)H](+) cations form channels housing triiodide (I(3)(-)) anion chains.
An unusually short inter-ion I...I distance of 3.5774(10) Å was observed within the triiodide chains.
Crystal structure analysis revealed nonmerohedral twinning and translational disorder of triiodide anions, with the crystal identified as a 0.5:0.5 inversion twin.

Conclusions:

The crystal structure demonstrates a unique assembly of cations and anions, leading to specific channel formation and anion organization.
The observed short inter-ion distances and disorder provide insights into anion-cation interactions in the solid state.
Accurate structural determination required advanced crystallographic techniques to model twinning and disorder.