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Its pK a value in water cannot be accurately determined but in acetonitrile it has been estimated as −0.10 and in 1,2-dichloroethane −12.3 (relative to the pK a value of 2,4,6-trinitrophenol (picric acid), anchored to zero to crudely approximate the aqueous pK a scale [2]), making it more acidic than triflic acid (pK a MeCN = 0.70, pK a DCE ...
In organic chemistry, the triflyl group (systematic name: trifluoromethanesulfonyl group) is a functional group with the formula R−SO 2 CF 3 and structure R−S(=O) 2 −CF 3. The triflyl group is often represented by –Tf. The related triflate group (trifluoromethanesulfonate) has the formula R−OSO 2 CF 3, and is represented by –OTf. [1]
For example, n-butyl triflate can be written as CH 3 CH 2 CH 2 CH 2 OTf. The corresponding triflate anion , CF 3 SO − 3 , is an extremely stable polyatomic ion ; this comes from the fact that triflic acid ( CF 3 SO 3 H ) is a superacid ; i.e. it is more acidic than pure sulfuric acid , already one of the strongest acids known.
It is commonly used as Li-ion source in electrolytes for Li-ion batteries as a safer alternative to commonly used lithium hexafluorophosphate. [3] It is made up of one Li cation and a bistriflimide anion.
Ditolylguanidine is a sigma receptor agonist. [1] It is somewhat [2] selective for sigma receptors, but non-selective between the two sigma receptor subtypes, binding to both σ1 and σ2 with equal affinity. [3] It has neuroprotective [4] and antidepressant effects, [5] and potentiates the effects of NMDA antagonists. [6]
Wastewater plants are failing to remove a group of potentially toxic chemicals before pumping treated water into rivers and lakes — and climate change may be making the situation even worse, a ...
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JuJu Watkins scored 25 points and No. 7 USC recovered from blowing a 18-point lead in the second half to beat Paige Bueckers and fourth-ranked UConn 72-70 on Saturday night. The game was a rematch ...