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Related Experiment Video

Updated: Mar 24, 2026

Detection and Quantification of Tunneling Nanotubes Using 3D Volume View Images

Detection and Quantification of Tunneling Nanotubes Using 3D Volume View Images

Published on: August 31, 2022

Atom Tunneling in Chemistry.

Jan Meisner¹, Johannes Kästner²

¹Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.

Angewandte Chemie (International Ed. in English)

|March 19, 2016

Summary

Quantum mechanical tunneling significantly impacts chemical reactions, enabling transformations in astrochemical and biochemical settings. Computational methods directly monitor this quantum effect, revealing altered reaction paths and rates impossible through thermal energy alone.

Keywords:

isotope effects quantum chemistry reaction rates reactivity tunnel effects

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Area of Science:

Quantum Chemistry
Chemical Physics
Astrochemistry

Background:

Quantum mechanical tunneling of atoms is a crucial phenomenon in chemical transformations.
Experimental evidence includes temperature-independent rate constants and enhanced kinetic isotope effects.
Computational investigations offer direct monitoring of tunneling's influence on reaction dynamics.

Purpose of the Study:

To highlight the significance of atomic tunneling in chemical reactions.
To discuss experimental and computational methods for detecting tunneling.
To explore the diverse roles of tunneling in various chemical environments.

Main Methods:

Review of experimental detection methods for atom tunneling.
Analysis of computational approaches for monitoring tunneling effects.
Examination of reaction paths and branching ratios influenced by tunneling.

Main Results:

Tunneling alters reaction paths and branching ratios.
Enables chemical reactions in astrochemical environments without thermal transition.
Influences biochemical processes through quantum effects.

Conclusions:

Quantum tunneling is a fundamental process in chemistry with broad implications.
Computational studies provide direct insights into tunneling mechanisms.
The tunnel effect is essential for understanding reactions in extreme environments and biological systems.