AI Article Synopsis
- A new dimer of silicon disulfide, (Me-cAAC:)2 Si2 S4 (referred to as Compound 2), has been successfully isolated at room temperature.
- This compound was synthesized by reacting (Me-cAAC:)2 Si2 with elemental sulfur in a specific molar ratio, making it the smallest silicon disulfide molecular unit characterized through various analytical techniques.
- Compound 2 features a unique structure with one terminal and two bridging sulfur atoms per silicon atom, and it remains stable for three months in an inert atmosphere without any decomposition.
Article Abstract
The Me-cAAC:-stabilized dimer of silicon disulfide (SiS2 ) has been isolated in the molecular form as (Me-cAAC:)2 Si2 S4 (2) at room temperature [Me-cAAC:=cyclic alkyl(amino) carbene]. Compound 2 has been synthesized from the reaction of (Me-cAAC:)2 Si2 with elemental sulfur in a 1:4 molar ratio under oxidative addition. This is the smallest molecular unit of silicon disulfide characterized by X-ray crystallography, electron ionization mass spectrometry, and NMR spectroscopy. Structures with three sulfur atoms arranged around a silicon atom are known; however, 2 is the first structurally characterized silicon-sulfur compound containing one terminal and two bridging sulfur atoms at each silicon atom. Compound 2 shows no decomposition after storing for three months in an inert atmosphere at ambient temperature. The bonding of 2 has been further studied by theoretical calculations.
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| http://dx.doi.org/10.1002/chem.201502092 | DOI Listing |
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