Distortion of a regular one-dimensional structure with a partially occupied band to
give bond alternation, eventually leading to
dimerization or
oligomerization.
The degree of
oligomerization,
depends on the electronic population of the
conduction band indicated by the wave vector of the
Fermi level
Note:
A Peierls distortion opens a gap at the
Fermi level, producing a net stabilization
of the distorted structure. The Peierls distortion for chain compounds is analogous
to the
Jahn–Teller effect for molecules. The prototypical example of the Peierls distortion in
organic chemistry is the bond alternation present in polyvinylene.
Source:
PAC, 2007, 79, 293
(Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006))
on page 381
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
