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Vinylmercury Hydrides: Synthesis and Spectroscopic Characterization
Jean-Claude Guillemin1, Nathalie Bellec, Sándor Kis Szétsi
1Department of Inorganic Chemistry, Technical University of Budapest, H-1521 Budapest, Hungary.
Inorganic Chemistry
|October 23, 1996
Summary
Researchers synthesized the first vinylmercury hydrides using a novel chemoselective reduction. These compounds exhibit low stability, decomposing into elemental mercury and divinylmercury at room temperature.
Area of Science:
- Organometallic Chemistry
- Synthetic Chemistry
Background:
- Vinylmercury compounds are important synthetic intermediates.
- Limited information exists on vinylmercury hydrides.
Purpose of the Study:
- To synthesize and characterize the first vinylmercury hydrides.
- To investigate the electronic structure and stability of these novel compounds.
Main Methods:
- Chemoselective reduction of vinylmercury chlorides with tributylstannane.
- Characterization using NMR spectroscopy ((1)H, (13)C, (199)Hg) and mass spectrometry.
- Photoelectron spectroscopy and ab initio quantum chemical calculations.
Main Results:
- Successful synthesis of vinylmercury hydrides, including the parent compound.
- Spectral data confirmed the structure of the synthesized hydrides.
- Evidence of (d-p)pi interaction between vinyl pi-system and mercury d-orbitals.
- Vinylmercury hydrides demonstrated low thermal stability, decomposing rapidly at room temperature.
Conclusions:
- The first vinylmercury hydrides were successfully synthesized and characterized.
- Electronic structure calculations and photoelectron spectra indicate (d-p)pi bonding interactions.
- These compounds are unstable at room temperature, limiting their practical applications.