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Updated: May 7, 2026
10:45
Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
Published on: February 5, 2022
Structural Analysis of Cubane-Type Iron Clusters
Lay Ling Tan1, R H Holm, Sonny C Lee
1Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L3G1, Canada.
Polyhedron
|September 28, 2013
Summary
This study introduces a new protocol to analyze the geometric properties of cubane-type [M4Q4] clusters, revealing deviations from perfect T symmetry in over 130 iron-containing clusters.
Area of Science:
- Inorganic Chemistry
- Crystallography
- Materials Science
Background:
- Generalized cluster type [M4(μ3-Q)4L] features a cubane-type [M4Q4] core.
- This core structure often deviates from perfect T symmetry.
Purpose of the Study:
- To develop and apply a new protocol for analyzing the geometric properties of [M4Q4] clusters.
- To quantify deviations from ideal T symmetry in these structures.
- To identify general structural features and trends.
Main Methods:
- Derivation of expressions for interatomic separations, bond angles, and volumes using M and Q atom coordinates.
- Calculation of structural parameters from observed average values.
- Comparison of calculated and observed values to measure symmetry deviation.
Main Results:
- Analysis of over 130 clusters containing [Fe4Q4] units (Q = S2-, Se2-, Te2-, [NPR3]-, [NR]2-).
- Sulfide-bridged clusters form the largest subset.
- Identification of general structural features and trends in parameters.
Conclusions:
- The developed protocol effectively measures deviations from tetrahedral symmetry in [M4Q4] clusters.
- A comprehensive database of structural properties has been compiled.
- Insights into the structural diversity of these important inorganic clusters were gained.
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