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

Colors and Magnetism03:02

Colors and Magnetism

12.1K
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...
12.1K
Ion Exchange01:17

Ion Exchange

631
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
631
Valence Bond Theory02:42

Valence Bond Theory

8.9K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.9K
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

582
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
582
Formation of Complex Ions03:45

Formation of Complex Ions

23.9K
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...
23.9K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

27.0K
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...
27.0K

You might also read

Related Articles

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

Sort by
Same author

Preparation, characterization and hydrogenation activity of multiply-reduced silicotungstic acid.

RSC advances·2026
Same author

Decoding Fluorine Peripheral Substitution Impact in Zinc Phthalocyanines for Perovskite Solar Cells.

ChemSusChem·2025
Same author

Highly reducible polyoxometalate-Dy(iii) SMM hybrid materials with exceptional charge stability.

Chemical science·2025
Same author

Computational Strategies for Predicting Excited-State Energies in Eu<sup>3+</sup> Down-Shifting Spectral Converters for Photovoltaic Devices.

Chemphyschem : a European journal of chemical physics and physical chemistry·2025
Same author

Spectroscopic investigations of a pharmaceutical solid form analogue: pyrimethanil L-tartaric acid hemi-cocrystal.

Physical chemistry chemical physics : PCCP·2025
Same author

Room Temperature Spin-Dependent Transport in 2D Hofmann-Type Single-Layer Network.

Small (Weinheim an der Bergstrasse, Germany)·2025

Related Experiment Video

Updated: Aug 9, 2025

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
10:19

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

12.0K

Elucidating the exchange interactions in a {GdIIICuII4} propellor.

María José Heras Ojea1, Claire Wilson1, Jordi Cirera2

  • 1School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK. mark.murrie@glasgow.ac.uk.

Dalton Transactions (Cambridge, England : 2003)
|February 17, 2023
PubMed
Summary

Researchers developed novel {LnCu4} complexes using bis-tris propane ligand, revealing unique propeller structures. Magnetic analysis showed ligand geometry dictates metal-to-metal communication, offering insights into complex magnetic behaviors.

More Related Videos

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

11.5K
Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure
07:58

Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure

Published on: January 18, 2021

6.0K

Related Experiment Videos

Last Updated: Aug 9, 2025

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
10:19

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

12.0K
Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

11.5K
Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure
07:58

Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure

Published on: January 18, 2021

6.0K

Area of Science:

  • Coordination Chemistry
  • Inorganic Chemistry
  • Magnetochemistry

Background:

  • The multinucleating ligand 2,2'-(propane-1,3-diyldiimino)bis[2-(hydroxymethyl)-propane-1,3-diol] (bis-tris propane, H6L) is a versatile building block in designing metal complexes.
  • Previous studies utilized acetate and nitrate as co-ligands with bis-tris propane.

Purpose of the Study:

  • To synthesize and characterize a new family of 3d-4f complexes with an unusual {LnCu4} four-blade propeller topology.
  • To investigate the influence of chloride and perchlorate as co-ligands on the complex structure and magnetic properties.
  • To understand the magnetic communication between metal centers as controlled by ligand geometry.

Main Methods:

  • Synthesis of novel lanthanide-copper complexes.
  • X-ray crystallography for structural determination.
  • Magnetic characterization (magnetic susceptibility measurements).
  • Density Functional Theory (DFT) calculations for analyzing exchange interactions.

Main Results:

  • Successful synthesis of [LnCu4(H4L)4](Cl)2(ClO4)·6CH3OH complexes (Ln = Gd, Tb, Dy, La).
  • Observation of a unique {LnCu4} four-blade propeller topology.
  • Magneto-structural analysis revealed that the arrangement of Cu(II) centers dictates magnetic communication.
  • DFT calculations provided insights into exchange interactions in Gd and La systems.

Conclusions:

  • The use of Cl- and ClO4- as co-ligands with bis-tris propane enables the formation of {LnCu4} complexes with a distinct propeller structure.
  • The geometrical arrangement of copper centers, dictated by the H4L ligand, is crucial for controlling magnetic exchange interactions.
  • This study offers a new platform for designing molecular magnetic materials with tunable properties.