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Related Experiment Video

Updated: Dec 8, 2025

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

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Published on: January 25, 2020

Interactions in Model Ionic Dyads and Triads Containing Tetrel Atoms.

Sean A C McDowell¹, Ruijing Wang², Qingzhong Li²

¹Department of Biological and Chemical Sciences, Cave Hill Campus, The University of the West Indies, P.O. Box 64, Bridgetown BB11000, Barbados.

Molecules (Basel, Switzerland)

|September 17, 2020

Summary

This study explores interactions in ionic molecular dyads and triads using computational methods. It reveals how tetrel bonding and polarization stabilize molecules, with electrostatic forces dominating in heavier elements.

Keywords:

EDA NBO cooperativity tetrel bond

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Area of Science:

Computational Chemistry
Quantum Chemistry
Molecular Interactions

Background:

Investigates interactions in model ionic YTX3···Z dyads and Li+···NCTCl3···F- triads.
Focuses on tetrel atoms (T = C, Si, Ge) and various substituents (Y, X, Z).

Purpose of the Study:

To elucidate the nature and strength of interactions in these ionic systems.
To understand the contributions of tetrel bonding and polarization to molecular stability.
To analyze energy components in model triads.

Main Methods:

Utilized ab initio computational methods.
Employed energy decomposition analysis (EDA).

Main Results:

YTX3 molecules are stabilized by anions (tetrel bonding) and cations (polarization).
In C-containing dyads, electrostatic and polarization forces contribute comparably; in Si- and Ge-analogues, electrostatic forces dominate.
Model Li+···NCTCl3···F- triads are energetically favorable compared to their separated fragments.

Conclusions:

Tetrel bonding and polarization are key stabilization mechanisms in these ionic systems.
The relative importance of electrostatic and polarization forces varies with the central tetrel atom.
Metastable ionic triads can form with significant binding energies.