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Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
A radical pathway to synthesise Mo and W dithiolene complexes
Ai Ling Tan1, Alexander J Blake, E Stephen Davies
1Universiti Brunei Darussalam, Jln Tungku Link BE1410, Bandar Seri Begawan, Brunei Darussalam. ailing.tan@ubd.edu.bn
Chemical Communications (Cambridge, England)
|November 16, 2010
Summary
Researchers developed a new synthesis for molybdenum and tungsten dithiolene complexes. This method utilizes in situ thermolysis of azo compounds to react with alkynes, yielding novel organometallic compounds.
Area of Science:
- Organometallic Chemistry
- Inorganic Synthesis
Background:
- Bis(cyclopentadienyl) metal complexes are versatile in coordination chemistry.
- Dithiolene ligands are important in catalysis and materials science.
Purpose of the Study:
- To develop a novel synthetic route for bis(cyclopentadienyl) dithiolene complexes of molybdenum and tungsten.
- To explore the reaction of [Cp(2)M(S(4))] with various alkynes.
Main Methods:
- In situ thermolysis of azo compounds: 2,2'-azobisisobutyronitrile (AIBN) or 1,1'-azobiscyclohexanecarbonitrile (ACCN).
- Reaction of molybdenum or tungsten complexes [Cp(2)M(S(4))] with alkynes (e.g., phenylacetylene, 2-pyridylacetylene).
Main Results:
- Successful synthesis of novel bis(cyclopentadienyl) dithiolene complexes of molybdenum and tungsten.
- Characterization of the resulting compounds with the general formula [Cp(2)M(S(2)C(2)RR')].
Conclusions:
- The developed method provides an efficient pathway to synthesize diverse bis(cyclopentadienyl) dithiolene complexes.
- This approach expands the scope of organometallic synthesis for these important ligand systems.
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