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Related Concept Videos

Molecules with Multiple Chiral Centers02:25

Molecules with Multiple Chiral Centers

Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
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Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines. While...
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The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
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Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
08:51

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Published on: August 18, 2017

Generalized Stern-Gerlach effect for chiral molecules.

Yong Li1, C Bruder, C P Sun

  • 1Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.

Physical Review Letters
|October 13, 2007
PubMed
Summary

We demonstrate a generalized Stern-Gerlach effect for chiral molecules using an optically induced gauge potential. This effect shows pseudospin and chirality dependence, offering new insights into molecular manipulation.

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Area of Science:

  • Quantum physics
  • Molecular dynamics
  • Optics

Background:

  • The Stern-Gerlach effect demonstrates spin-dependent splitting of atomic beams by magnetic fields.
  • Chiral molecules possess non-superimposable mirror images, leading to distinct properties.

Purpose of the Study:

  • To investigate the possibility of inducing a Stern-Gerlach-like effect in chiral molecules.
  • To explore the role of optically induced gauge potentials in molecular manipulation.

Main Methods:

  • Utilizing a three-level chiral molecule model.
  • Applying three inhomogeneous light fields to induce a gauge potential.
  • Simulating adiabatic evolution in the pseudospin subspace.

Main Results:

  • An optically induced gauge potential affects the center of mass of chiral molecules.
  • Observable pseudospin-dependent and chirality-dependent generalized Stern-Gerlach effects were demonstrated numerically.
  • The effect is shown to be applicable to mixtures of left- and right-handed chiral molecules.

Conclusions:

  • Optically induced gauge potentials can create a generalized Stern-Gerlach effect for chiral molecules.
  • This phenomenon offers a novel method for manipulating chiral molecules based on their handedness and pseudospin.
  • The findings have potential applications in molecular sorting and quantum information processing.