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Published on: March 24, 2018
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The chemical bond in solids-revisited
1Peter-Grünberg-Institut PGI-1 and JARA/HPC, Forschungszentrum Jülich, D-52425 Jülich, Germany.
Summary
This review explores modern condensed matter physics concepts of chemical bonding, including electron-rich, electron-deficient, and hypervalent bonds. It examines their relation to established ideas and the rediscovery of half bonds and fractional valencies.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Theoretical Chemistry
Background:
- Complements a 2018 review on the chemical bond from a condensed matter physicist's perspective.
- Focuses on applications in phase change materials.
- Explores recent chemical concepts gaining traction in condensed matter physics.
Purpose of the Study:
- To survey and clarify modern chemical bonding concepts within condensed matter physics.
- To investigate the relationship between these concepts and established chemical ideas.
- To highlight the historical rediscovery of concepts like 'half bonds' and 'fractional valencies'.
Main Methods:
- Literature review and conceptual analysis.
- Survey of terms like 'electron-rich', 'electron-deficient', 'hypervalent', 'three-centre', 'metavalent' bonds, and 'multicentre hyperbonding'.
- Discussion of bonding in metals and Peierls distortion.
Main Results:
- Identifies and defines various bonding concepts used in condensed matter physics.
- Examines the potential for these terms to be new labels for older, less familiar ideas.
- Highlights the recurring importance of 'half bonds' and 'fractional valencies'.
Conclusions:
- Modern condensed matter physics utilizes diverse terminology for chemical bonding.
- Understanding these concepts requires appreciating their historical context and potential overlap with established theories.
- The rediscovery of fundamental ideas like fractional valencies underscores their enduring significance.
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