Is Bistrifluoromethyl Sulfide (Ch₃Sch₃) an Ecofriendly Dielectric Replacement Gas for Sulfur Hexafluoride?

Bis(trifluoromethyl) sulfides, i.e., CH<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>SCH<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>, was proposed to be a potential insulation gas to replace sulfur hexafluoride (SF<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</inf>), a potent greenhouse gas being phased out of all frivolous applications due to environmental concern. The global warming potential (GWP) of CF<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>SCF<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> was estimated previously to be 2.8 by an empirical structure-reactivity relationship model. Mechanisms for the atmospheric degradation of CF<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>SCF<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> by hydroxyl (OH) radicals have been examined theoretically in the present work using the solid <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$a b$</tex> initio quantum chemistry calculations. Atmospheric lifetime of CF<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>SCF<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> toward OH was calculated to be around 300 years. Together with the radiative efficiency, 0.463 Wm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−2</sup>ppb<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−1</sup>, the GWP of CF3SCF3 was predicted approximately to be 12000, as indicative of a super greenhouse gas.