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Conical intersection

In quantum chemistry, a conical intersection of two or more potential energy surfaces is the set of molecular geometry points where the potential energy surfaces are degenerate (intersect) and the non-adiabatic couplings between these states are non-vanishing. In the vicinity of conical intersections, the Born–Oppenheimer approximation breaks down and…

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Local characterization

ConeDiatomic moleculesDegrees of freedomAvoided crossingsMolecular vibrations
12 related topics

Overview

Quantum chemistryPotential energy surfacesMolecular geometryDegenerateVibronic coupling
17 related topics

Categorization by symmetry of intersecting electronic states

Non-abelian groupJahn–Teller effect
2 related topics

Experimental observation

Trapped-ion
1 related topics

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Overview

Experimental observation

Local characterization

Categorization by symmetry of intersecting electronic states

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Conical intersection

Nodes37
Edges36
Triples61
Avg. degree1.95
Density0.054054
Components1

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Conical intersection

Top relations

see also · 36
Conical intersection → Advanced Series, Baer, Beyond Born, Bibcode, Born, Computation, Conical Intersections, David, Diabolical Conical Intersections, Domcke, Dynamics, Electronic Nonadiabatic Coupling Terms, Electronic Structure, Experiment, Horst, ISBN, Köppel, Lock-gray-alt-2, Lock-green, Lock-red-alt-2
related to Categorization by symmetry of intersecting electronic states · 11
Conical intersection → C3h, C3v, Conical, Coulomb Hamiltonian, D3h, For, It, Jahn, Symmetry-required, Teller, When
related to Local characterization · 7
Conical intersection → Conical, If, In, Instead, The, This, Without
is a · 3
Conical intersection → intersection between two electronic states carrying the same multidimensional irreducible representation, intersection between two electronic states that carry different point group symmetry, intersection between two electronic states that carry the same point group symmetry
related to External links · 3
Conical intersection → Computational Organic PhotochemistryPotential Energy, Conical Intersections, Surfaces
related to Experimental observation · 1
Conical intersection → In

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Important terminology

conical intersections states electronic intersection two space symmetry energy degeneracy non-adiabatic point potential molecular coupling seam important points degenerate group

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Conical intersectionis aintersection between two electronic states carrying the same multidimensional irreducible representation0.90text
Conical intersectionis aintersection between two electronic states that carry different point group symmetry0.90text
Conical intersectionis aintersection between two electronic states that carry the same point group symmetry0.90text
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesConical0.60section
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesWhen0.60section
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesCoulomb Hamiltonian0.60section
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesFor0.60section
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesC3h0.60section
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesC3v0.60section
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesD3h0.60section
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesIt0.60section
Conical intersectionrelated to Categorization by symmetry of intersecting electronic statesSymmetry-required0.60section

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