Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Colors and Magnetism

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

Structural Isomerism

Structural Isomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...

Assembly of Complex Microtubule Structures

Assembly of Complex Microtubule Structures

Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.

Electron Transport Chain: Complex III and IV

Electron Transport Chain: Complex III and IV

During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...

You might also read

Related Articles

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

Sort by

Same author

Effect of solvents on multifunctional Dy<sub>2</sub> complexes with axial chiral ligands (<i>R</i>)/(<i>S</i>)-1,1'-binaphthyl-2,2'-diyl phosphate.

Dalton transactions (Cambridge, England : 2003)·2026

Same author

Magnetic Anisotropy in the Homoleptic [CoX<sub>4</sub>]<sup>2-</sup> (X = Cl, Br, I) Series: Spectroscopic Determination and Ligand Field Studies.

Inorganic chemistry·2026

Same author

Thermally activated snap-through transitions controlled by tunable free energy landscape.

The Journal of chemical physics·2026

Same author

Air-Stable Chiral Four-Coordinate Cobalt(II) Guanidinium BINOLate Single-Molecule Magnets.

Inorganic chemistry·2026

Same author

Programming magnetization dynamics in a Dy-croconic acid system.

Dalton transactions (Cambridge, England : 2003)·2026

Same author

Pentagonal Bipyramidal Dy(III) Ions Bridged by Homologous Metallocyanate Anions into One-Dimensional Chain Structures Exhibiting Distinct Magnetic Relaxation Properties.

Inorganic chemistry·2026

Search research articles

Related Experiment Video

Updated: Jan 30, 2026

Single-molecule Manipulation of G-quadruplexes by Magnetic Tweezers

Single-molecule Manipulation of G-quadruplexes by Magnetic Tweezers

Published on: September 19, 2017

Hexagonal Bipyramidal Dy(III) Complexes as a Structural Archetype for Single-Molecule Magnets.

Jing Li, Silvia Gómez-Coca^1,2, Brian S Dolinar¹

¹Department of Chemistry , Texas A&M University , P.O. Box 30012, College Station , Texas 77842 , United States.

Inorganic Chemistry

|January 30, 2019

Summary

Researchers developed new distorted hexagonal bipyramidal dysprosium complexes for high-density data storage. Optimizing local crystal field symmetry enhances magnetic anisotropy, crucial for high-performance single-molecule magnets (SMMs).

More Related Videos

Author Spotlight: Advanced Single-Molecule Techniques for Investigating Telomeric Protein-DNA Interactions

Author Spotlight: Advanced Single-Molecule Techniques for Investigating Telomeric Protein-DNA Interactions

Published on: August 30, 2024

Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers

Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers

Published on: July 25, 2012

Related Experiment Videos

Last Updated: Jan 30, 2026

Single-molecule Manipulation of G-quadruplexes by Magnetic Tweezers

Single-molecule Manipulation of G-quadruplexes by Magnetic Tweezers

Published on: September 19, 2017

Author Spotlight: Advanced Single-Molecule Techniques for Investigating Telomeric Protein-DNA Interactions

Author Spotlight: Advanced Single-Molecule Techniques for Investigating Telomeric Protein-DNA Interactions

Published on: August 30, 2024

Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers

Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers

Published on: July 25, 2012

Area of Science:

Materials Science
Quantum Computing
Nanotechnology

Background:

Single-molecule magnets (SMMs) are promising for advanced data storage and quantum computing.
The crystal field symmetry around metal ions critically influences SMM performance.

Purpose of the Study:

To investigate the impact of local crystal field symmetry on magnetic anisotropy in dysprosium (Dy) complexes.
To design and synthesize novel SMMs with enhanced properties.

Main Methods:

Synthesis of two stable distorted hexagonal bipyramidal Dy complexes.
Design of a hexagonal bipyramidal Dy model complex with 18-crown-6.
Experimental characterization and theoretical calculations of magnetic properties.

Main Results:

The synthesized Dy complexes exhibit slow relaxation of magnetization.
Quantum tunneling in SMMs is strongly dependent on local crystal field symmetries.
Magnetic anisotropy increases significantly as symmetry approaches ideal D_6h.

Conclusions:

The hexagonal bipyramidal geometry is a promising motif for designing high-performance SMMs.
Precise control over local symmetry is key to enhancing magnetic anisotropy and SMM functionality.