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Reversible hydrogen activation by the Pt complex Pt(Sn(t)Bu3)2(CNtBu)2.
Veeranna Yempally1, Lei Zhu, Burjor Captain
1Department of Chemistry, University of Miami, Coral Gables, Florida 33124, USA.
A new platinum complex, compound 1, was synthesized and characterized. This platinum complex can reversibly eliminate and bind hydride ligands, forming a 16-electron platinum complex, compound 2.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
Background:
- Platinum complexes are crucial in catalysis and materials science.
- Understanding ligand dynamics in platinum complexes is key to developing new applications.
Purpose of the Study:
- To synthesize and characterize a novel platinum complex with hydride ligands.
- To investigate the reactivity and stability of the platinum complex and its derivatives.
Main Methods:
- Synthesis of platinum complex Pt(Sn(t)Bu(3))(2)(CN(t)Bu)(2)(H)(2) (1) via reaction of Pt(COD)(2) with (t)Bu(3)SnH and CN(t)Bu.
- Characterization of compound 1 as a mononuclear 18-electron platinum complex with octahedral geometry.
- Investigated the elimination of hydride ligands to form a 16-electron complex (2) and its regeneration.
Main Results:
- Compound 1 was obtained in 32% yield.
- Compound 1 features two Sn(t)Bu(3), two CN(t)Bu, and two hydride ligands.
- Hydride ligands in compound 1 can be reversibly eliminated and re-added, forming compound 2 and regenerating compound 1.
Conclusions:
- A novel platinum hydride complex (1) was successfully synthesized.
- The complex exhibits reversible hydride ligand dynamics, interconverting between 18-electron (1) and 16-electron (2) species.
- This reversible hydride chemistry offers potential for catalytic applications.
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