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Related Experiment Video

Updated: Nov 4, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F⁻

Published on: July 27, 2018

Planar tetracoordinate fluorine atoms.

Gabriela Castillo-Toraya¹, Mesías Orozco-Ic¹, Eugenia Dzib¹

¹Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida Mérida Yucatán México gmerino@cinvestav.mx jorge.barroso@cinvestav.mx.

Chemical Science

|May 27, 2021

Summary

This summary is machine-generated.

Researchers report the first stable planar tetracoordinate fluorine (ptF) atoms in novel cationic clusters. These findings challenge previous assumptions and open new avenues in inorganic chemistry and materials science.

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Last Updated: Nov 4, 2025

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Area of Science:

Inorganic Chemistry
Computational Chemistry
Quantum Chemistry

Background:

Planar tetracoordinate atoms are rare, with fluorine previously absent from known examples.
Existing theoretical and experimental studies have not indicated the possibility of planar tetracoordinate fluorine.

Purpose of the Study:

To introduce the first stable cationic clusters featuring a planar tetracoordinate fluorine atom.
To investigate the electronic structure and bonding characteristics of these novel systems.

Main Methods:

Computational modeling and theoretical calculations were employed.
Global minima searches were performed to identify stable structures.
Bonding analyses, including electronic delocalization and charge distribution, were conducted.

Main Results:

Six cationic clusters (FIn4+, FTl4+, FGaIn3+, FIn2Tl2+, FIn3Tl+, FInTl3+) containing planar tetracoordinate fluorine were identified.
Bonding analysis revealed significant electrostatic interactions between fluorine and peripheral atoms.
Fluorine atoms in these planar tetracoordinate fluorine (ptF) systems do not act as sigma-acceptors, preventing back-donation.

Conclusions:

The identified clusters represent the first examples of planar tetracoordinate fluorine.
The electronic delocalization and sigma-electron diatropic response suggest potential sigma-aromaticity in these systems.
These findings expand the known chemistry of planar tetracoordinate atoms and offer new insights into bonding.