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Updated: Oct 10, 2025
10:51
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
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Dinitrogen-derived (diarylboryl)diazenido complexes with differing coordination to the thallium cation
Amal Bouammali1, Anaïs Coffinet1, Laure Vendier1
1LCC-CNRS, Université de Toulouse, CNRS, UPS, 205 route de Narbonne, BP44099, F-31077 Toulouse cedex 4, France. antoine.simonneau@lcc-toulouse.fr.
Dalton Transactions (Cambridge, England : 2003)
|December 15, 2021
Summary
Researchers explored cationic boryldiazenido-tungsten complexes for nitrogen (N₂) activation. Attempts to form these complexes via halide abstraction from tungsten precursors did not yield the desired frustrated Lewis pairs, instead forming adducts.
Area of Science:
- Organometallic Chemistry
- Inorganic Chemistry
- Catalysis
Background:
- Nitrogen (N₂) activation is crucial for industrial processes like ammonia synthesis.
- Frustrated Lewis pairs (FLPs) offer a non-metal-based approach to N₂ activation.
- Modeling FLP behavior with transition metal complexes provides insights into activation mechanisms.
Purpose of the Study:
- To synthesize novel N₂-derived cationic boryldiazenido-tungsten complexes.
- To model semimetallic metal-borinium frustrated Lewis pairs for N₂ activation.
- To investigate the feasibility of halide abstraction for generating these complexes.
Main Methods:
- Synthesis of *trans*-(diarylboryl)diazenido-halo-tungsten precursors.
- Reactions involving halide abstraction using thallium(I) cation (Tl⁺).
- Characterization of resulting adducts to determine coordination modes.
Main Results:
- Halide abstraction was not observed, indicating no chloride scavenging.
- Adducts were formed, with cation coordination influenced by boryldiazenide substituents and ancillary ligands.
- The study did not successfully prepare the target cationic boryldiazenido-tungsten complexes.
Conclusions:
- The attempted halide abstraction route is not suitable for preparing these specific cationic boryldiazenido-tungsten complexes.
- The observed adduct formation highlights complex coordination behavior in related systems.
- Further synthetic strategies are needed to model metal-borinium FLPs for N₂ activation.
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