Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds01:14

π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds

In aromatic compounds, such as benzene, the circulation of (4n + 2) π-electrons sets up a diamagnetic or diatropic ring current around the perimeter of the molecule. This current induces a magnetic field that opposes the external field inside the ring and reinforces it on the outside. The protons in benzene are deshielded and exhibit high chemical shifts in the range 6.5–8.5 ppm. The shielding effect at the center of the ring is evident in complex aromatic molecules, such as annulenes. In...
The Contractile Ring02:15

The Contractile Ring

Contractile rings are composed of microfilaments and are responsible for separating the daughter cells during cytokinesis. Contractile ring assembly proceeds along with other cell cycle events; however, very few mechanistic details are known about the timing and coordination of the contractile rings with the cell cycle.
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution00:52

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
Divergence and Curl of Magnetic Field01:26

Divergence and Curl of Magnetic Field

The magnetic field due to a volume current distribution given by the Biot–Savart Law can be expressed as follows:
Stereoisomerism of Cyclic Compounds02:33

Stereoisomerism of Cyclic Compounds

In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
Magnetic Field due to Moving Charges01:25

Magnetic Field due to Moving Charges

A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Nuclear Spin-Spin Coupling Density Functions: Through-Bond and Through-Space Interactions.

The journal of physical chemistry. A·2026
Same author

Paratropic ring currents discovered in six-membered rings of conical nanographenes: carboncones.

Physical chemistry chemical physics : PCCP·2025
Same author

Stable cationic nanobelts synthesized by chemical oxidation of methylene-bridged [6]cycloparaphenylene.

Chemical science·2025
Same author

Calculation of divergenceless magnetically induced current density in molecules.

The Journal of chemical physics·2024
Same author

A Study of Differential Topology on the Magnetically Induced Isotropically Averaged Lorentz Force Density of a Few Simple Molecules.

Molecules (Basel, Switzerland)·2024
Same author

On the Unusual Global Aromaticity of Two Cyclopenta-Ring-Fused Oligo(m-Phenylenes).

Chemphyschem : a European journal of chemical physics and physical chemistry·2024

Related Experiment Video

Updated: Jul 16, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

Spatial ring current model of the [2.2]paracyclophane molecule.

Stefano Pelloni1, Paolo Lazzeretti, Riccardo Zanasi

  • 1Dipartimento di Chimica dell'Università degli Studi di Modena e Reggio Emilia, Via Campi 183, 41100 Modena, Italy.

The Journal of Physical Chemistry. A
|March 30, 2007
PubMed
Summary

This study visualizes induced current density in [2.2]paracyclophane using stagnation graphs and streamlines. These tools help understand the molecule's magnetic properties and response.

More Related Videos

Application of High-speed Super-resolution SPEED Microscopy in Live Primary Cilium
07:53

Application of High-speed Super-resolution SPEED Microscopy in Live Primary Cilium

Published on: January 16, 2018

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Related Experiment Videos

Last Updated: Jul 16, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

Application of High-speed Super-resolution SPEED Microscopy in Live Primary Cilium
07:53

Application of High-speed Super-resolution SPEED Microscopy in Live Primary Cilium

Published on: January 16, 2018

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Area of Science:

  • Computational Chemistry
  • Quantum Chemistry
  • Molecular Modeling

Background:

  • [2.2]Paracyclophane is a unique aromatic system with interesting electronic properties.
  • Understanding induced current density is crucial for predicting magnetic responses of molecules.
  • Previous models for magnetic anisotropy lacked comprehensive visualization tools.

Purpose of the Study:

  • To develop and present a novel visualization method for magnetic field-induced current density in [2.2]paracyclophane.
  • To elucidate the magnetotropic behavior of the [2.2]paracyclophane system.
  • To provide a toolkit for rationalizing the magnetic response of complex molecular systems.

Main Methods:

  • Generation of stagnation graphs to represent current density.
  • Calculation and plotting of streamlines for current flow visualization.
  • Analysis of Biot-Savart magnetic shielding density.

Main Results:

  • Compact stagnation graphs effectively convey essential information about induced current density.
  • Streamline plots complete a useful ring current model for magnetotropy.
  • The developed methods provide a basic toolkit for rationalizing magnetic responses.

Conclusions:

  • Stagnation graphs and streamline plots offer powerful tools for visualizing and understanding molecular magnetic responses.
  • The ring current model, enhanced by these visualizations, aids in comprehending the magnetotropy of [2.2]paracyclophane.
  • This approach facilitates the rational design and analysis of molecules with specific magnetic properties.