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Boron trifluoride is a versatile Lewis acid that forms adducts with such Lewis bases as fluoride and ethers: CsF + BF 3 → Cs[BF 4] O(CH 2 CH 3) 2 + BF 3 → BF 3 ·O(CH 2 CH 3) 2. Tetrafluoroborate salts are commonly employed as non-coordinating anions.
In the BF 3 affinity scale, Lewis bases' BF 3 affinities are equal to the negative enthalpy change for formation of a solution phase adduct between the base and gaseous BF 3. The reaction is: \[Base(solution) ~+~BF_3(g)~\rightarrow~Base-BF_3(solution)~~~~~- \Delta H~=~\sf{BF_3 ~Affinity}~ \nonumber \]
The results actually show that the enthalpy of BF3 adduct formation in DCM solution is clearly influenced by specific interactions, DCM acting as hydrogen-bonding donor (HBD) molecule in two ways: base/DCM and adduct/DCM, confirming that specific solvation is an important contribution to ex...
16 sty 2023 · BF 3 is a planar molecule because it does not have a lone pair, which makes it have a trigonal planar geometry. BF 3 is considered a Lewis acid because it accepts electrons at its empty p orbital. Examples of reactivity of the empty p orbital. The most common reactions with involving BF 3 is to form complexes with ethers. figure 4.
4 lis 2021 · In this work, we investigate the best available ab initio methods compatible with the size of the adducts to calculate BF 3 enthalpies of adduct formation, i.e., reactions (2) and (3). In the case of reactions (2), we chose a series of representative Lewis bases covering the maximum span of the Δ H BF 3 scale.
Boron trifluoride (BF 3) is a very common Lewis acid in industry as it is largely tolerant to air exposure. BF 3 supported on silica provides good accessibility for the reactants to the active site and is a mild strength solid acid [72].
Boron trifluoride | BF3 | CID 6356 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
