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Updated: Jul 3, 2026

Synthetic Methodology for Asymmetric Ferrocene Derived Bio-conjugate Systems via Solid Phase Resin-based Methodology
Published on: March 12, 2015
Synthesis and structure of a ferrocenylboron dication
Holger Braunschweig1, Martin Kaupp, Christoph Lambert
1Institut für Anorganische Chemie and Institut für Organische Chemie, Julius-Maximilians Universität Würzburg, 97074 Würzburg, Germany. h.braunschweig@mail.uni-wuerzburg.de
Researchers synthesized a rare boron dication, [FcB(NC 5H 4-4-Me) 3][BAr (f) 4] 2, by treating a borane with a Lewis base and a sodium salt. This discovery offers new insights into boron chemistry.
Area of Science:
- Organometallic Chemistry
- Boron Chemistry
- Supramolecular Chemistry
Background:
- Boron dications are exceptionally rare in chemical literature.
- Understanding the synthesis and structure of novel boron compounds is crucial for advancing inorganic chemistry.
Purpose of the Study:
- To synthesize and structurally characterize a novel boron dication.
- To explore the reactivity of ferrocenyl boranes with Lewis bases.
Main Methods:
- Reaction of the borane Br 2BFc with 4-methylpyridine in the presence of Na[BAr (f) 4].
- Single-crystal X-ray diffraction for structural characterization of the product.
Main Results:
- Successful synthesis of the boron dication [FcB(NC 5H 4-4-Me) 3][BAr (f) 4] 2.
- The dication features a central boron atom coordinated to three 4-methylpyridine ligands and two ferrocenyl groups.
- Structural analysis confirmed the unique dicationic nature and coordination environment around the boron center.
Conclusions:
- The study reports a rare, structurally characterized boron dication, expanding the known family of polyhedral boron compounds.
- The synthetic route provides a viable method for accessing similar boron dications.
- This work contributes to the fundamental understanding of boron's coordination chemistry and electronic properties.
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