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

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...
Coordination Number and Geometry02:57

Coordination Number and Geometry

For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
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...
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...
Formation of Complex Ions03:45

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...

You might also read

Related Articles

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

Sort by
Same author

Chalcogen and Hydrogen Bond Team up in Driving Anion⋅⋅⋅Anion Self-Assembly.

Chemistry (Weinheim an der Bergstrasse, Germany)·2023
Same author

Tuning the Nucleophilicity and Electrophilicity of Group 10 Elements through Substituent Effects: A DFT Study.

International journal of molecular sciences·2023
Same author

Biological noncovalent N/O⋯V interactions: insights from theory and protein data bank analyses.

Physical chemistry chemical physics : PCCP·2023
Same author

Spodium Bonds Involving Methylmercury and Ethylmercury in Proteins: Insights from X-ray Analysis and Computations.

Inorganic chemistry·2023
Same author

Synthesis, X-ray characterization and DFT analysis of dicyanidoaurate telluronium salts: on the importance of charge assisted chalcogen bonds.

Dalton transactions (Cambridge, England : 2003)·2023
Same author

Sulfate-induced large amplitude conformational change in a Solomon link.

Chemical communications (Cambridge, England)·2023

Related Experiment Video

Updated: Jul 4, 2026

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
14:44

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

Coordination complexes exhibiting anion...pi interactions: synthesis, structure, and theoretical studies.

Leoní A Barrios1, Guillem Aromí, Antonio Frontera

  • 1Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain.

Inorganic Chemistry
|May 31, 2008
PubMed
Summary

New copper coordination complexes were synthesized using a polydentate ligand and various copper salts. These complexes exhibit unique structures and anion-pi interactions, confirmed by computational studies.

More Related Videos

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

Preparation of SNS Cobalt(II) Pincer Model Complexes of Liver Alcohol Dehydrogenase
06:31

Preparation of SNS Cobalt(II) Pincer Model Complexes of Liver Alcohol Dehydrogenase

Published on: March 19, 2020

Related Experiment Videos

Last Updated: Jul 4, 2026

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
14:44

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

Preparation of SNS Cobalt(II) Pincer Model Complexes of Liver Alcohol Dehydrogenase
06:31

Preparation of SNS Cobalt(II) Pincer Model Complexes of Liver Alcohol Dehydrogenase

Published on: March 19, 2020

Area of Science:

  • Coordination Chemistry
  • Supramolecular Chemistry
  • Computational Chemistry

Background:

  • Polydentate ligands are crucial in designing novel coordination compounds.
  • Understanding metal-ligand interactions is key to developing new materials.
  • Anion-pi interactions play a significant role in crystal engineering.

Purpose of the Study:

  • To synthesize and characterize novel molecular coordination aggregates using a polydentate ligand and copper salts.
  • To investigate the structural features and intermolecular interactions within these aggregates.
  • To computationally validate the observed anion-pi interactions and their contribution to stability.

Main Methods:

  • Synthesis of copper(II) coordination complexes with 2,4,6-tris(dipyridin-2-ylamino)-1,3,5-triazine (dpyatriz).
  • X-ray crystallography for structural determination of the coordination aggregates.
  • High-level ab initio calculations and MIPp partition scheme for studying anion-pi interactions.

Main Results:

  • Formation of three distinct molecular coordination aggregates: [Cu 3Cl 3(dpyatriz) 2](ClO 4) 3, [Cu 3Br 3(dpyatriz) 2](ClO 4) 3, and [Cu 4(N 3) 4(dpyatriz) 2(DMF) 4(ClO 4) 2](ClO 4) 2.
  • Complexes feature face-to-face or shifted parallel arrangements of dpyatriz ligands coordinated to Cu(II) ions.
  • Experimental and computational evidence confirmed favorable anion-pi interactions between perchlorate ions and triazine rings, enhanced by pi-pi stacking.

Conclusions:

  • The study successfully synthesized and characterized novel copper coordination aggregates with unique structural motifs.
  • Anion-pi interactions involving perchlorate and triazine rings are significant in stabilizing the crystal structures.
  • A synergistic effect between pi-pi stacking and anion-pi interactions was identified, offering insights into crystal engineering strategies.