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

Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

1.7K
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...
1.7K
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

999
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
999
EDTA: Chemistry and Properties01:22

EDTA: Chemistry and Properties

4.2K
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...
4.2K
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
Complexometric Titration: Ligands00:43

Complexometric Titration: Ligands

2.6K
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...
2.6K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

19.3K
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...
19.3K

You might also read

Related Articles

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

Sort by
Same author

State-of-the-Art and Synthetic Challenges for Hydrosilane Production.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

Experimental Evaluation of the Hydricity of Hydrosilanes.

Inorganic chemistry·2025
Same author

Scandium-Catalyzed Highly Selective Deoxygenation of Alcohols by Using Hydrosilanes as Reductants.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025
Same author

A Sydnonimine-based Click-and-Release Approach to Cyclic Products.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025
Same author

Zirconium(IV)-Catalyzed Hydrosilylation of Organic Carbonates and Polycarbonates Household Wastes into Alcohol Derivatives<sup>[</sup> <sup>]</sup>.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025
Same author

Catalytic Reduction of Imines with Silylformates: Formation of Silyl Carbamates through CO<sub>2</sub> Insertion.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025

Related Experiment Video

Updated: May 5, 2026

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

14.6K

Nitrite complexes of the rare earth elements.

Jacky Pouessel1, Pierre Thuéry, Jean-Claude Berthet

  • 1CEA, IRAMIS, SIS2M, CNRS UMR 3299, CEA/Saclay, 91191 Gif-sur-Yvette, France. thibault.cantat@cea.fr.

Dalton Transactions (Cambridge, England : 2003)
|November 29, 2013
PubMed
Summary

This study details new rare earth element nitrite complexes, including the first homoleptic samarium, ytterbium, and yttrium examples. Nitrite ligand behavior depends on metal cation size, with stability varying across different rare earth elements.

More Related Videos

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

11.1K
Low-energy Cathodoluminescence for OxyNitride Phosphors
07:03

Low-energy Cathodoluminescence for OxyNitride Phosphors

Published on: November 15, 2016

12.7K

Related Experiment Videos

Last Updated: May 5, 2026

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

14.6K
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

11.1K
Low-energy Cathodoluminescence for OxyNitride Phosphors
07:03

Low-energy Cathodoluminescence for OxyNitride Phosphors

Published on: November 15, 2016

12.7K

Area of Science:

  • Inorganic Chemistry
  • Coordination Chemistry
  • Rare Earth Chemistry

Background:

  • The coordination chemistry of the nitrite anion is complex and varies significantly with different metal ions.
  • Rare earth elements (REEs) offer unique electronic and ionic properties for coordination chemistry studies.

Purpose of the Study:

  • To investigate the coordination chemistry of the nitrite anion with various rare earth elements.
  • To synthesize and structurally characterize novel rare earth nitrite complexes.
  • To explore the factors influencing the coordination behavior and stability of the nitrite ligand in REE complexes.

Main Methods:

  • Synthesis of rare earth nitrite complexes.
  • Single-crystal X-ray diffraction for structural characterization.
  • Spectroscopic and analytical techniques to confirm complex composition and properties.

Main Results:

  • The first homoleptic nitrite complexes of samarium (Sm), ytterbium (Yb), and yttrium (Y) were successfully synthesized and characterized.
  • The coordination behavior of the nitrite anion was found to be directly correlated with the ionic radius of the rare earth metal cation.
  • The nitrito ligand demonstrated stability in the coordination sphere of cerium(III) but was readily reduced by samarium(II) iodide (SmI2).

Conclusions:

  • The ionic radius of the metal cation is a critical determinant of nitrite coordination mode and stability in rare earth complexes.
  • Specific rare earth elements can stabilize or reduce the nitrite ligand, highlighting the nuanced reactivity within this group.
  • This work expands the known coordination chemistry of rare earth nitrites and provides insights into their electronic and structural properties.