Preferred Label : Peierls distortion;
IUPAC definition : 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, λ depends on the electronic population of the conduction
band indicated by the wave vector of the Fermi level kF \[\lambda 2\ \pi /k_{\mathrm{F}}\];
Scope 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.;
Origin ID : PT07442;
See also
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, λ depends on the electronic population of the conduction
band indicated by the wave vector of the Fermi level kF \[\lambda 2\ \pi /k_{\mathrm{F}}\]
