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  2. Jahn–Teller effect - Wikipedia

    en.wikipedia.org/wiki/JahnTeller_effect

    The JahnTeller effect (JT effect or JTE) is an important mechanism of spontaneous symmetry breaking in molecular and solid-state systems which has far-reaching consequences in different fields, and is responsible for a variety of phenomena in spectroscopy, stereochemistry, crystal chemistry, molecular and solid-state physics, and materials science.

  3. Second-order Jahn-Teller distortion in main-group element ...

    en.wikipedia.org/wiki/Second-order_Jahn-Teller...

    Second-order Jahn-Teller distortion provides a rigorous and first-principles approach to the distortion problem. The interactions between the HOMOs and LUMOs to afford a new set of molecular orbitals is an example of second-order Jahn-Teller distortion.

  4. Pseudo Jahn–Teller effect - Wikipedia

    en.wikipedia.org/wiki/Pseudo_JahnTeller_effect

    The pseudo JahnTeller effect (PJTE), occasionally also known as second-order JTE, is a direct extension of the JahnTeller effect (JTE) where spontaneous symmetry breaking in polyatomic systems (molecules and solids) occurs even when the relevant electronic states are not degenerate. The PJTE can occur under the influence of sufficiently ...

  5. Tanabe–Sugano diagram - Wikipedia

    en.wikipedia.org/wiki/Tanabe–Sugano_diagram

    The prominent shoulder in this absorption band is due to a JahnTeller distortion which removes the degeneracy of the two 2 E g states. However, since these two transitions overlap in a UV-vis spectrum, this transition from 2 T 2g to 2 E g does not require a Tanabe–Sugano diagram.

  6. Octahedral molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Octahedral_molecular_geometry

    The term can also refer to octahedral influenced by the JahnTeller effect, which is a common phenomenon encountered in coordination chemistry. This reduces the symmetry of the molecule from O h to D 4h and is known as a tetragonal distortion.

  7. Isaac B. Bersuker - Wikipedia

    en.wikipedia.org/wiki/Isaac_B._Bersuker

    Known for his "life-long years of experience in theoretical chemistry" [1] working on the electronic structure and properties of coordination compounds, Isaac B. Bersuker is “one of the most widely recognized authorities” [2] in the theory of the JahnTeller effect (JTE) and the pseudo-JahnTeller effect (PJTE).

  8. File:Jahn-Teller and pseudo Jahn-Teller effects.svg - Wikipedia

    en.wikipedia.org/wiki/File:Jahn-Teller_and...

    English: A conceptual comparison of the Jahn-Teller and pseudo Jahn-Teller effects, showing the mutual relation of two potential energy surfaces (PES) in the two cases. The number of PES is two in this picture but it can be more in actual molecular or solid-state systems.

  9. Talk:Jahn–Teller effect - Wikipedia

    en.wikipedia.org/wiki/Talk:JahnTeller_effect

    the Jahn-Teller effect is a pretty advanced topic in chemistry and a reader would really benefit from some groundwork, octahedral complex would be preferable over octahedral complex. See also the AXE method, most molecular geometries are still missing. V8rik 20:07, 12 July 2005 (UTC)