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Properties of Organometallic Compounds

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Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.

Valence Bond Theory

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...

Colors and Magnetism

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Color in Coordination Complexes
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Metal-Ligand Bonds

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.
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Complexation Equilibria: The Chelate Effect

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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: Factors Influencing Stability of Complexes

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Related Experiment Video

Updated: Sep 3, 2025

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Published on: July 30, 2017

Heterobimetallic μ₂-halocarbyne complexes.

Liam K Burt¹, Rian D Dewhurst^1,2,3, Anthony F Hill¹

¹Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia. a.hill@anu.edu.au.

Dalton Transactions (Cambridge, England : 2003)

|July 27, 2022

Summary

This summary is machine-generated.

New halocarbyne complexes were synthesized by reacting metal complexes. These novel compounds were studied using various methods, revealing their unique structures and reactivity, including rearrangement to carbido complexes.

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Ion Mobility-Mass Spectrometry Techniques for Determining the Structure and Mechanisms of Metal Ion Recognition and Redox Activity of Metal Binding Oligopeptides

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Published on: September 7, 2019

Area of Science:

Organometallic Chemistry
Inorganic Chemistry

Background:

Halocarbyne complexes are reactive intermediates.
Synthesis of polynuclear metal complexes is challenging.

Purpose of the Study:

To synthesize and characterize novel μ2-halocarbyne complexes.
To investigate the reactivity and structural properties of these complexes.

Main Methods:

Reaction of halocarbyne complexes with gold and platinum complexes.
Spectroscopic analysis (NMR, IR).
X-ray crystallography.
Computational studies.

Main Results:

Synthesis of rare μ2-halocarbyne complexes with gold and platinum.
Observation of spontaneous rearrangement to μ2-carbido complexes.
Substitution of phosphine ligands by carbon monoxide.
Characterization of structures and electronic properties.

Conclusions:

The study successfully synthesized and characterized novel μ2-halocarbyne complexes.
These complexes exhibit interesting reactivity, including rearrangement and ligand substitution.
The findings contribute to the understanding of metal-carbene and metal-carbido bonding.