Experimental and Theoretical Studies on the Reduction of CO2 to CO with Chloro(methyl)disilane Components from the Direct Process

Mathias Flinker, Sara Lopez, Dennis Ulsøe Nielsen, Kim Daasbjerg, Frank Jensen, Troels Skrydstrup

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Three disilanes, (CH 3) 3 SiSi(CH 3) 3, Cl(CH 3) 2 SiSi(CH 3) 2 Cl, and Cl 2 (CH 3)SiSi(CH 3)Cl 2, all representing components of the Direct Process residue for the industrial synthesis of chloromethylsilanes, were evaluated for their abilities to reduce carbon dioxide to carbon monoxide upon treatment with fluoride salts. In particular, Cl(CH 3) 2 SiSi(CH 3) 2 Cl proved to be highly efficient upon the use of stoichiometric amounts of potassium bifluoride. DFT calculations performed on the reduction steps with (CH 3) 3 SiSi(CH 3) 3 and fluorinated analogues of this disilane suggest that the previously proposed pathway involving an intermediate silacarboxylic acid is plausible.

Original languageEnglish
JournalSYNLETT: Accounts and Rapid Communications in Chemical Synthesis
Pages (from-to)2439-2444
Number of pages6
Publication statusPublished - 2017


  • Direct Process
  • carbon dioxide
  • carbon monoxide
  • disilanes
  • palladium
  • reduction

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