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Dinuclear copper complexes: coordination of Group 14 heteroborates
Holger Scheel1, Jessica Wiederkehr, Klaus Eichele
1Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany. lars.wesemann@uni-tuebingen.de.
Dalton Transactions (Cambridge, England : 2003)
|June 26, 2014
Summary
New dicopper(I) complexes featuring the dmapm ligand were synthesized. These complexes react with Group 14 heteroborates, forming diverse structures and demonstrating tin nucleophilicity for further reactions.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
- Coordination Chemistry
Background:
- Dicopper(I) complexes are valuable in catalysis and materials science.
- The chelating dmapm ligand offers unique coordination properties.
- Group 14 heteroborates present novel reactivity patterns.
Purpose of the Study:
- Synthesize and structurally characterize novel dicopper(I) complexes with the dmapm ligand.
- Investigate the reactivity of these dicopper complexes with Group 14 heteroborates.
- Explore the coordination modes and electronic properties of the resulting adducts.
Main Methods:
- Synthesis of dicopper(I) complexes with dmapm ligand.
- Structural characterization using X-ray diffraction.
- Reactions with Group 14 heteroborates (e.g., stanna-closo-dodecaborate).
- (119)Sn Mössbauer spectroscopy for tin characterization.
Main Results:
- Successful synthesis of [Cu2(μ-dmapm)(CH3CN)2][BF4]2.
- Formation of diverse molecular structures upon coordination of closo-borates.
- Observation of varying Cu-Cu distances in the resulting complexes.
- Characterization of tin vertex in stanna-closo-dodecaborate adducts.
- Demonstration of tin nucleophilicity through reaction with a molybdenum carbonyl complex.
Conclusions:
- Dicopper(I)-dmapm complexes serve as versatile electrophiles for Group 14 heteroborates.
- Coordination of heteroborates leads to tunable structural and electronic properties.
- The tin atom in stanna-closo-dodecaborate exhibits significant nucleophilicity, enabling further functionalization.
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