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Properties of Transition Metals

Properties of Transition Metals

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.

Properties of Organometallic Compounds

Properties of Organometallic Compounds

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.

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.
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...

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Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties

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An [FeIII30] molecular metal oxide.

Alice E Dearle¹, Daniel J Cutler¹, Marco Coletta¹

¹EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK. E.Brechin@ed.ac.uk.

Chemical Communications (Cambridge, England)

|November 22, 2021

Summary

Researchers synthesized a novel [Fe30] molecular metal oxide from iron(III) bromide. This stable cluster exhibits alternating iron ion layers and complex magnetic interactions.

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Area of Science:

Inorganic Chemistry
Materials Science
Nanotechnology

Background:

Iron bromide (FeBr3) is a precursor for iron-containing materials.
Molecular metal oxides offer tunable properties for various applications.

Purpose of the Study:

To synthesize and characterize a novel [Fe30] molecular metal oxide.
To investigate the structural, stability, and magnetic properties of the new cluster.

Main Methods:

Dissolution of FeBr3 in acetonitrile and 3,4-lutidine with an amine.
Mass spectrometry for cluster formation and stability analysis.
Magnetic measurements and Density Functional Theory (DFT) calculations for magnetic interactions.

Main Results:

Formation of a stable [Fe30] molecular metal oxide with alternating tetrahedral and octahedral Fe(III) ions.
Rapid cluster formation and stability in solution confirmed by mass spectrometry.
Antiferromagnetic exchange interactions identified through magnetic measurements and DFT calculations.

Conclusions:

A novel [Fe30] molecular metal oxide can be synthesized under mild conditions.
The cluster exhibits structural complexity and intriguing magnetic properties.
Further research can explore potential applications of this molecular metal oxide.