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Iron pentacarbonyl ligands on silver scorpionates
Guocang Wang1, Anurag Noonikara-Poyil1, Israel Fernández2
1Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA. dias@uta.edu.
Fluorinated ligands stabilize silver(I) with iron pentacarbonyl. The silver-iron bond is primarily electrostatic, influenced by sigma-donation and backbonding, tunable via scorpionate groups.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
Background:
- Stabilization of metal-metal interactions is crucial in inorganic chemistry.
- Tris(pyrazolyl)borate ligands offer versatile coordination environments.
Purpose of the Study:
- To synthesize and characterize novel silver(I)-iron(0) complexes.
- To investigate the nature of the Ag-Fe bond and the role of supporting ligands.
Main Methods:
- Synthesis of fluorinated tris(pyrazolyl)borate ligands.
- Coordination of silver(I) to iron pentacarbonyl.
- Spectroscopic and structural analysis of the resulting complexes.
Main Results:
- Successful stabilization of a silver(I) species coordinated to neutral iron pentacarbonyl.
- Characterization of the Ag-Fe interaction as predominantly electrostatic.
- Identification of significant sigma-donor and backbonding contributions.
Conclusions:
- Fluorinated tris(pyrazolyl)borate ligands effectively stabilize unusual Ag-Fe bonds.
- The electronic properties of the Ag-Fe interaction can be tuned by modifying scorpionate substituents.
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