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

8.8K
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...
8.8K
Structural Isomerism02:34

Structural Isomerism

19.5K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
19.5K
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

564
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...
564
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

21.1K
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...
21.1K
Properties of Transition Metals02:58

Properties of Transition Metals

26.4K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
26.4K
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

1.1K
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.
1.1K

You might also read

Related Articles

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

Sort by
Same author

Low-Valent Rhodium and Iridium Assemblies Directed by Uracilate and Guaninate Linkers.

Inorganic chemistry·2026
Same author

Carbonyl insertion into metal-boron based clusters: pathway to a rhodathiacarborane.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Breaking the Mold: Electrophilic Hydrophosphanation Emerges.

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

Cooperative anion activation at a cobalt center through ion pairing and ligand design.

Nature communications·2026
Same author

A Tour in the Chemistry of a Tricoordinate Rh(-I) Complex.

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

Activation of CO, Isocyanides, and Alkynes by Frustrated Lewis Pairs Based on Cp*M/N (M = Rh, Ir) Couples.

Inorganic chemistry·2025
Same journal

Total Synthesis and Structural Revision of Tetracyclic Diterpenoid (±)-Papililone A and (-)-Papililone A.

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

Light-Powered Atroposelective Ratcheting via Excited-State Donor-Acceptor Interactions.

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

Modular One-Pot Access to π-Expanded Tetrakis(Phenothiazinyl)-Silanes With Broadly Tunable Redox and Emission Properties.

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

pH-Tolerant Tripeptide Coacervates as Biomimetic Catalytic Microreactors.

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

Nano-Nickel Pinned Defective MoS<sub>2</sub> Heterostructures via Ball Milling for Improved Hydrogen Evolution.

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

Hollow NiCo-LDH Nanocage Derived From ZIF-67 as an Efficient Catalyst for the Thermal Decomposition of Ammonium Perchlorate.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
See all related articles

Related Experiment Video

Updated: Jul 24, 2025

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

10.5K

Mixed-Valence Tetrametallic Iridium Chains.

M Pilar Del Río1, B Eva Villarroya1, José A López1

  • 1Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, Facultad de Ciencias, 50009, Zaragoza, Spain.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|July 4, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces novel tetrametallic iridium chains with fractional oxidation states, enabling electronic delocalization. These metal chains exhibit tunable absorption spectra, offering potential for new materials.

Keywords:
UV-visiridiummetal-metal bondsmetallic chainsmixed-valence

More Related Videos

Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes
12:27

Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes

Published on: September 8, 2013

10.9K
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

2.8K

Related Experiment Videos

Last Updated: Jul 24, 2025

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

10.5K
Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes
12:27

Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes

Published on: September 8, 2013

10.9K
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

2.8K

Area of Science:

  • Coordination Chemistry
  • Organometallic Chemistry
  • Materials Science

Background:

  • Dinuclear iridium units ([Ir2(μ-OPy)2(CO)4]) are key building blocks.
  • Connecting these units forms tetrametallic iridium chains.

Purpose of the Study:

  • To synthesize and characterize neutral and dicationic tetrametallic iridium chains.
  • To investigate the electronic properties and structural features of these novel complexes.
  • To explore the impact of terminal ligands on the metallic chain.

Main Methods:

  • Synthesis of neutral [X-{Ir2}-{Ir2}-X] and dicationic [L-{Ir2}-{Ir2}-L]2+ complexes.
  • Spectroscopic analysis (UV-Vis absorption) to determine electronic properties.
  • Structural characterization to understand metal-metal bond lengths and ligand effects.

Main Results:

  • Complexes exhibit fractional averaged oxidation states of +1.5 with electronic delocalization.
  • Axial ligands minimally influence metal-metal bond lengths, but the chain affects Ir-L/X bonds.
  • Free rotation around the Ir-Ir bond observed in solution, with a low-energy transition state for the chloride complex.
  • Absorption bands at 438-504 nm are tunable by terminal ligands.

Conclusions:

  • Successfully synthesized and characterized novel tetrametallic iridium chains.
  • Demonstrated electronic delocalization and tunable optical properties.
  • Highlighted the significant structural and electronic influence of the metallic chain and terminal ligands.