Ditopic ambiphilicity of an anionic dimetalloborylene complex.
Holger Braunschweig1, Alexander Damme, Rian D Dewhurst
1Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. h.braunschweig@uni-wuerzburg.de
Journal of the American Chemical Society
|January 22, 2013
Summary
This study reveals a novel reactivity of anionic borido complexes, demonstrating manganese-centered nucleophilic substitution on group 14 halides. The research explores the ditopic, ambiphilic nature of these unique boron complexes.
Area of Science:
- Organometallic Chemistry
- Main Group Chemistry
- Computational Chemistry
Background:
- Anionic borido complexes exhibit diverse reactivity, previously showing nucleophilic boron behavior and potential boron-centered electrophilicity.
- The known reactivity includes reactions with electrophiles like methyl iodide and transition metal complexes.
Purpose of the Study:
- To elucidate a third reactivity profile of anionic borido complexes.
- To investigate the ditopic, ambiphilic reactivity of these complexes.
- To explore the basis for discrimination between main group and transition metal halides.
Main Methods:
- Experimental reactions of anionic borido complexes with group 14 metal halides and group 11 metal halides.
- Computational studies to analyze the electronic structure and bonding.
- Characterization of reaction products.
Main Results:
- A new reactivity profile was identified: manganese-centered nucleophilic substitution on heavier group 14 metal halides.
- Group 11 halides interact with the boron center, forming distinct structures compared to gold complexes.
- Computational analysis provides insight into the anion's discrimination between different metal halides.
Conclusions:
- Anionic borido complexes display ditopic, ambiphilic reactivity, engaging through both boron and manganese centers.
- The observed reactivity patterns are influenced by the nature of the metal halide electrophile.
- This work expands the understanding of boron and manganese cooperative reactivity in organometallic chemistry.
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