Overview
- Presents fundamentally new ideas for describing dynamics in small molecules
- Describes the application of molecular symmetry calculations to formulate new models for internal molecular motion
- Compares a recent experimental work with theoretical calculations
- Covers three different hot topics in molecular spectroscopy: nuclear spin symmetry, the motion of extremely floppy molecules, and the ultrafast rotations of small molecules in hot environments
- Includes supplementary material: sn.pub/extras
Part of the book series: Springer Series on Atomic, Optical, and Plasma Physics (SSAOPP, volume 97)
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Table of contents (14 chapters)
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Front Matter
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Group Theory in Molecular Physics
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Front Matter
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Extremely Floppy Molecules
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Front Matter
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Semi-classical Approach to Rotational Dynamics
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Front Matter
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Back Matter
Keywords
About this book
The book begins with an introduction to molecular symmetry in general, followed by a discussion of nuclear spin symmetry. Here, a new correlation between identical particle exchange and spin angular momentum symmetry of nuclei is exhibited.The central part of the book is the discussion of extremely floppy molecules, which are not describable in the framework of traditional theories. The book introduces a fundamentally new approach to describing the molecular dynamics of these molecules - the super-rotor model, which is based on a five-dimensional symmetry that has never been observed in molecules before. By applying the super-rotor theory to the prototype of floppy molecules, protonated methane, this model can consistently predict the symmetry and energy of low-energy states, which were characterized experimentally only a few years ago. The theoretical predictions agree with the experimental results, which makes the prospect of further developing the super-rotor theory and applying it to other molecules a promising one. In the final section, the book also covers the topic of ultrafast rotations, where usual quantum calculations reach their natural limits. A semi-classical method for determining rotational energies, developed in the early 1990s, is shown to be attachable to quantum calculations of the vibrational states. This new combined method is suitable for efficiently calculating ro-vibrational energies, even for molecular states with large angular momentum.
Authors and Affiliations
About the author
Hanno Schmiedt received his PhD from the University of Cologne, Germany, in 2017, where he also obtained his MSc in 2014. In 2009, he became a fellow of the German National Academic Foundation, and he was awarded the “Honors Branch” scholarship of the Bonn Cologne Graduate School of Physics and Astronomy (BCGS) in 2014.
His research focus is on molecular spectroscopy, where he studies unconventional dynamical behavior in small molecular systems. He is the co-author of several publications on molecular symmetry and semiclassical calculations of rotational energies for small molecules.Bibliographic Information
Book Title: Molecular Symmetry, Super-Rotation, and Semiclassical Motion
Book Subtitle: New Ideas for Solving Old Problems
Authors: Hanno Schmiedt
Series Title: Springer Series on Atomic, Optical, and Plasma Physics
DOI: https://doi.org/10.1007/978-3-319-66071-4
Publisher: Springer Cham
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: Springer International Publishing AG 2017
Hardcover ISBN: 978-3-319-66070-7Published: 11 September 2017
Softcover ISBN: 978-3-319-88170-6Published: 15 August 2018
eBook ISBN: 978-3-319-66071-4Published: 31 August 2017
Series ISSN: 1615-5653
Series E-ISSN: 2197-6791
Edition Number: 1
Number of Pages: IX, 171
Number of Illustrations: 4 b/w illustrations, 25 illustrations in colour
Topics: Atomic/Molecular Structure and Spectra, Numerical and Computational Physics, Simulation, Physical Chemistry, Vibration, Dynamical Systems, Control