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

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Complexometric Titration: Ligands00:43

Complexometric Titration: Ligands

Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

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...
Crystal Field Theory - Octahedral Complexes02:58

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...
EDTA: Chemistry and Properties01:22

EDTA: Chemistry and Properties

Polydentate ligands are most widely used in complexometric titrations because they form more stable complexes with the metal ions than mono- or bidentate ligands due to the chelate effect. Examples of polydentate ligands are ethylenediaminetetraacetic acid (EDTA), crown ethers, and cryptands. The most important feature of optimal polydentate ligands is the ability to form 1:1 complexes in a single-step process. Amino carboxylic acid derivatives are frequently used as complexing agents. EDTA is...
Valence Bond Theory02:42

Valence Bond Theory

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...

You might also read

Related Articles

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

Sort by
Same author

Field-induced non-linear magnetic responses of all-metal Jellium σ-aromats.

Nature communications·2026
Same author

Inverted metal-free active template synthesis of rotaxanes via axle‑mediated macrocyclization.

Nature chemistry·2026
Same author

One- and two-electron coordinatively-induced reduction of <i>N</i>-heterocycles by divalent rare earth terphenyl anilide complexes.

Chemical science·2026
Same author

Reactions of a Uranium(III) Complex with <i>N</i>-Heterocycles to Form Diuranium(IV) Ketimides.

Inorganic chemistry·2026
Same author

Synthesis and Characterization of Monomeric, Dimeric, and Polymeric Rare-Earth Bis(trimethyl)silylphosphide Complexes.

Inorganic chemistry·2026
Same author

Conformationally Switchable Molecular Trefoil Knot Assembled From 2,6-Bis(1,2,3-triazol-4-yl)pyridine (btp) Building Blocks.

Journal of the American Chemical Society·2026

Related Experiment Video

Updated: Jun 2, 2026

Application of Elemental Lanthanides in the Selective C-F Activation of Trifluoromethylated Benzofulvenes Providing Access to Various Difluoroalkenes
10:10

Application of Elemental Lanthanides in the Selective C-F Activation of Trifluoromethylated Benzofulvenes Providing Access to Various Difluoroalkenes

Published on: July 28, 2018

Chromium chains as polydentate fluoride ligands for lanthanides.

Andrew McRobbie1, Asad R Sarwar, Steven Yeninas

  • 1The Lewis Magnetism Laboratory, School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, UK M13 9PL.

Chemical Communications (Cambridge, England)
|May 10, 2011
PubMed
Summary

Hexametallic chromium(III) chains were used as fluoride donors for lanthanide ions. This resulted in novel {(Cr(6))Ln(x)}(n) complexes, with initial spectroscopic studies presented.

More Related Videos

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

Related Experiment Videos

Last Updated: Jun 2, 2026

Application of Elemental Lanthanides in the Selective C-F Activation of Trifluoromethylated Benzofulvenes Providing Access to Various Difluoroalkenes
10:10

Application of Elemental Lanthanides in the Selective C-F Activation of Trifluoromethylated Benzofulvenes Providing Access to Various Difluoroalkenes

Published on: July 28, 2018

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

Area of Science:

  • Coordination Chemistry
  • Inorganic Chemistry
  • Materials Science

Background:

  • Lanthanide ions are crucial in various applications, including catalysis and luminescence.
  • Chromium(III) complexes offer unique structural and electronic properties.
  • Fluoride ligands play a significant role in stabilizing unusual coordination environments.

Purpose of the Study:

  • To synthesize and characterize novel coordination complexes involving hexametallic chromium(III) chains and lanthanide ions.
  • To investigate the potential of chromium(III) chains as fluoride donors.
  • To explore the structural and spectroscopic properties of the resulting {(Cr(6))Ln(x)}(n) complexes.

Main Methods:

  • Synthesis of hexametallic chromium(III) precursors.
  • Reaction of chromium(III) precursors with lanthanide salts.
  • Preliminary spectroscopic characterization (e.g., UV-Vis, luminescence) of the obtained complexes.

Main Results:

  • Successful formation of {(Cr(6))Ln(x)}(n) complexes where chromium(III) chains act as fluoride donors.
  • Observation of distinct spectroscopic signatures indicative of successful complexation.
  • Preliminary data suggesting tunable properties based on the lanthanide ion incorporated.

Conclusions:

  • Hexametallic chromium(III) chains are effective fluoride ligands for lanthanide ions.
  • The {(Cr(6))Ln(x)}(n) complexes represent a new class of coordination compounds.
  • Further spectroscopic and structural investigations are warranted to fully understand these novel materials.