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10:37
Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Expeditious access to the most easily ionized closed-shell molecule, W2(hpp)4
F Albert Cotton1, James P Donahue, Dennis L Lichtenberger
1Department of Chemistry, Laboratory for Molecular Structure and Bonding, PO Box 30012, Texas A&M University, College Station, TX 77842-3012, USA. cotton@tamu.edu
Journal of the American Chemical Society
|August 4, 2005
Summary
Researchers developed a superior synthetic route for the W2(hpp)4 molecule. This new method provides high yields of a stable precursor, W2(hpp)4Cl2, simplifying the production of W2(hpp)4.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
- Synthetic Chemistry
Background:
- Previous synthetic routes for W2(hpp)4 were inefficient.
- The molecule W2(hpp)4 is of interest in chemical research.
Purpose of the Study:
- To develop a more efficient and superior synthetic pathway to W2(hpp)4.
- To establish a reliable method for producing a stable precursor for W2(hpp)4.
Main Methods:
- A one-pot reaction involving tungsten hexacarbonyl (W(CO)6) and 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine (Hhpp).
- Reaction conducted in o-dichlorobenzene at 200 degrees C.
- Reduction of the intermediate W2(hpp)4Cl2 to W2(hpp)4.
Main Results:
- The synthesis of W2(hpp)4Cl2 was achieved in over 90% yield.
- The resulting W2(hpp)4Cl2 is a stable compound, suitable for storage.
- Efficient one-step reduction of W2(hpp)4Cl2 to W2(hpp)4 was demonstrated.
Conclusions:
- A novel and highly efficient synthetic route to W2(hpp)4 has been established.
- The new method offers significant advantages over previously available synthetic pathways.
- The stable W2(hpp)4Cl2 intermediate facilitates the production of W2(hpp)4.
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