Experimental and theoretical studies on shock compression of liquid carbon monoxide

1982 ◽  
Author(s):  
F. H. Ree ◽  
W. J. Nellis ◽  
M. van Thiel ◽  
A. C. Mitchell
Keyword(s):  
Carbon Monoxide ◽  
Shock Compression ◽  
Theoretical Studies ◽  
Liquid Carbon ◽  
Experimental And Theoretical Studies

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

Synlett ◽  
2017 ◽  
Vol 28 (18) ◽  
pp. 2439-2444 ◽  
Author(s):  
Frank Jensen ◽  
Troels Skrydstrup ◽  
Mathias Flinker ◽  
Sara Lopez ◽  
Dennis Nielsen ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Dft Calculations ◽  
Theoretical Studies ◽  
Direct Process ◽  
Industrial Synthesis ◽  
Reduce Carbon Dioxide ◽  
Reduction Of Co2 ◽  
Fluoride Salts ◽  
Experimental And Theoretical Studies

Three disilanes, (CH3)3SiSi(CH3)3, Cl(CH3)2SiSi(CH3)2Cl, and Cl2(CH3)SiSi(CH3)Cl2, 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(CH3)2SiSi(CH3)2Cl proved to be highly efficient upon the use of stoichiometric amounts of potassium bifluoride. DFT calculations performed on the reduction steps with (CH3)3SiSi(CH3)3 and fluorinated analogues of this disilane suggest that the previously proposed pathway involving an intermediate silacarboxylic acid is plausible.

ChemInform Abstract: SHOCK COMPRESSION OF LIQUID CARBON MONOXIDE AND METHANE TO 90 GPA (900 KBAR)

1981 ◽  
Vol 12 (51) ◽  
Author(s):  
W. J. NELLIS ◽  
F. H. REE ◽  
M. VAN THIEL ◽  
A. C. MITCHELL
Keyword(s):  
Carbon Monoxide ◽  
Shock Compression ◽  
Liquid Carbon

Shock compression of liquid carbon monoxide and methane to 90 GPa (900 kbar)

1981 ◽  
Vol 75 (6) ◽  
pp. 3055-3063 ◽  
Author(s):  
W. J. Nellis ◽  
F. H. Ree ◽  
M. van Thiel ◽  
A. C. Mitchell
Keyword(s):  
Carbon Monoxide ◽  
Shock Compression ◽  
Liquid Carbon

The Stabilizing Effect of Pre-Equilibria: A Trifluoromethyl Complex as CF2 Reservoir in Catalytic Olefin Difluorocarbenation

2020 ◽  
Author(s):  
Thomas Louis-Goff ◽  
Huu Vinh Trinh ◽  
Eileen Chen ◽  
Arnold L. Rheingold ◽  
Christian Ehm ◽  
...  
Keyword(s):  
High Selectivity ◽  
Side Reactions ◽  
Theoretical Studies ◽  
Attractive Feature ◽  
Catalyst Recovery ◽  
Wide Range ◽  
Stabilizing Effect ◽  
Experimental And Theoretical Studies

A new, efficient, catalytic difluorocarbenation of olefins to give 1,1-difluorocyclopropanes is presented. The catalyst, an organobismuth complex, uses TMSCF<sub>3</sub> as a stoichiometric difluorocarbene source. We demonstrate both the viability and robustness of this reaction over a wide range of alkenes and alkynes, including electron-poor alkenes, to generate the corresponding 1,1-difluorocyclopropanes and 1,1-difluorocyclopropenes. Ease of catalyst recovery from the reaction mixture is another attractive feature of this method. In depth experimental and theoretical studies showed that the key difluorocarbene-generating step proceeds through a bismuth non-redox synchronous mechanism generating a highly reactive free CF<sub>2</sub> in an endergonic pre-equilibrium. It is the reversibility when generating the difluorocarbene that accounts for the high selectivity, while minimizing CF<sub>2</sub>-recombination side-reactions.

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