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

Ion Exchange01:17

Ion Exchange

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 basic...
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...
Complexation Equilibria: Overview01:23

Complexation Equilibria: Overview

Complexation reactions take place when dative or coordinate covalent bonds form between metal ions and ligands. The compounds formed in these reactions are called coordination compounds. The number of bonds formed between the metal ion and the ligands is called its coordination number. Generally, most metal ions in an aqueous solution are solvated by water molecules and thus exist as aqua complexes.
The equilibrium constant of the complexation reaction is represented as the formation constant...
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

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...
EDTA: Auxiliary Complexing Reagents01:26

EDTA: Auxiliary Complexing Reagents

EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...

You might also read

Related Articles

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

Sort by
Same author

Rationalising catalytic performance using a unique correlation matrix.

Chemical communications (Cambridge, England)·2024
Same author

Using pressure to unravel the structure-dynamic-disorder relationship in metal halide perovskites.

Scientific reports·2023
Same author

Photoelectrochemical Performance of Strontium Titanium Oxynitride Photo-Activated with Cobalt Phosphate Nanoparticles for Oxidation of Alkaline Water.

Nanomaterials (Basel, Switzerland)·2023
Same author

Influence of Pore Size in Benzoin Condensation of Furfural Using Heterogenized Benzimidazole Organocatalysts.

Chemistry (Weinheim an der Bergstrasse, Germany)·2022
Same author

Combined spectroscopic and computational study for optimising catalyst design in hydrocarbon transformations.

Chemical communications (Cambridge, England)·2022
Same author

Hybrid catalysts based on N-heterocyclic carbene anchored on hierarchical zeolites.

RSC advances·2022

Related Experiment Video

Updated: May 16, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Complex anion inclusion compounds: flexible anion-exchange materials.

Edward R Williams1, Rebecca M Leithall, Robert Raja

  • 1Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.

Chemical Communications (Cambridge, England)
|November 24, 2012
PubMed
Summary

New copper chloropyrophosphate frameworks can trap diverse inorganic anions within their flexible pores. This discovery opens possibilities for novel materials with tunable properties.

More Related Videos

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
04:51

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange

Published on: June 23, 2023

Ion Exchange Chromatography (IEX) Coupled to Multi-angle Light Scattering (MALS) for Protein Separation and Characterization
10:41

Ion Exchange Chromatography (IEX) Coupled to Multi-angle Light Scattering (MALS) for Protein Separation and Characterization

Published on: April 5, 2019

Related Experiment Videos

Last Updated: May 16, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
04:51

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange

Published on: June 23, 2023

Ion Exchange Chromatography (IEX) Coupled to Multi-angle Light Scattering (MALS) for Protein Separation and Characterization
10:41

Ion Exchange Chromatography (IEX) Coupled to Multi-angle Light Scattering (MALS) for Protein Separation and Characterization

Published on: April 5, 2019

Area of Science:

  • Materials Science
  • Inorganic Chemistry
  • Crystal Engineering

Background:

  • Metal-organic frameworks (MOFs) and coordination polymers offer tunable structures for various applications.
  • Developing novel framework materials with unique pore environments is crucial for advanced applications.
  • Copper-based frameworks present interesting electronic and catalytic properties.

Purpose of the Study:

  • To synthesize novel copper chloropyrophosphate frameworks.
  • To investigate the ability of these frameworks to encapsulate complex inorganic anions.
  • To explore the structural diversity achievable by varying the trapped anions.

Main Methods:

  • Hydrothermal synthesis of copper chloropyrophosphate materials.
  • Single-crystal X-ray diffraction for structural determination.
  • Anion exchange or in-situ trapping during synthesis.

Main Results:

  • Successful synthesis of copper chloropyrophosphate frameworks with 1D channels.
  • Demonstrated ability to incorporate a wide range of inorganic anions, including halides and complex metal halo-anions.
  • Frameworks exhibit flexibility, accommodating different anion sizes and geometries.

Conclusions:

  • Copper chloropyrophosphate frameworks represent a versatile platform for anion encapsulation.
  • The flexible nature of the framework allows for structural adaptation to guest anions.
  • This work expands the library of functional porous materials with potential applications in separation and catalysis.