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Updated: May 15, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
Published on: November 22, 2016
Diphenyl(pyridin-2-yl)-phosphane selenide.
1Research Centre for Synthesis and Catalysis, Department of Chemistry, University of Johannesburg (APK Campus), PO Box 524, Auckland Park, Johannesburg, 2006, South Africa.
This study details the crystal structure of a novel organoselenium compound, C(17)H(14)NPSe. The phosphorus atom exhibits a distorted tetrahedral geometry, influencing molecular packing through various intermolecular interactions.
Area of Science:
- Organometallic Chemistry
- Crystallography
- Materials Science
Background:
- Understanding the structural nuances of organophosphorus-selenium compounds is crucial for designing new materials.
- The P atom's coordination environment significantly impacts molecular properties and reactivity.
Purpose of the Study:
- To elucidate the crystal structure and molecular geometry of the title compound, C(17)H(14)NPSe.
- To investigate the role of intermolecular interactions in the solid-state packing of this organoselenium compound.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the three-dimensional structure.
- Analysis of bond lengths, bond angles, and intermolecular contacts (C-H⋯Se/N/π) was performed.
Main Results:
- The phosphorus atom was found to possess a distorted tetrahedral environment.
- An effective cone angle of 163° was calculated for the phosphorus center.
- Distinct C-H⋯Se, C-H⋯N, and C-H⋯π intermolecular interactions were identified in the crystal lattice.
Conclusions:
- The distorted tetrahedral geometry around the phosphorus atom is a key structural feature.
- Intermolecular interactions play a significant role in stabilizing the crystal structure of C(17)H(14)NPSe.
- This structural information provides a foundation for further studies on the chemical and physical properties of related organoselenium compounds.
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