Decanuclear Fe^III clusters with hemiacetal ligands: a new {M₁₀(μ₃-O)₈} cluster core

Area of Science:

• Inorganic Chemistry
• Coordination Chemistry
• Materials Science

Background:

• Schiff base hydrolysis can yield polynuclear iron(III) clusters.
• Decanuclear iron(III) clusters with specific ligands are known.
• Exploring direct synthesis routes is crucial for novel cluster discovery.

Purpose of the Study:

• To investigate direct synthetic pathways for medium nuclearity iron(III) clusters.
• To explore the use of aldehydes in methanolic media for cluster synthesis.
• To characterize novel iron(III) cluster structures.

Main Methods:

• Direct synthesis using aldehydes in methanolic solution.
• Hydrolysis of Schiff bases as a precursor route.
• Characterization of the resulting iron(III) complexes.

Main Results:

• Successful direct synthesis of new iron(III) complexes.
• Identification of an unprecedented decanuclear {Fe10(μ3-O)8} cluster core.
• The new clusters were formed using α-methyl-2-pyridinemethanolate ligands.

Conclusions:

• Direct synthesis from aldehydes offers a viable route to medium nuclearity iron(III) clusters.
• The {Fe10(μ3-O)8} core represents a new structural motif in iron cluster chemistry.
• This work expands the library of accessible iron cluster architectures.