What is Boron trifluoride (BF3) used for?

Boron trifluoride is the actinic admixture with the blueprint BF3. This acerbic colourless baneful gas forms white effluvium in clammy air. It is a advantageous Lewis acerbic and a able architecture block for added boron compounds.
The geometry of a atom of BF3 is trigonal planar. The D3h agreement conforms with the anticipation of VSEPR theory. The atom has no dipole moment by advantage of its top symmetry. The atom is isoelectronic with the carbonate anion, CO32−.
BF3 is frequently referred to as "electron deficient," a description that is able by its exothermic acuteness against Lewis bases.
In the boron trihalides, BX3, the breadth of the B-F bonds (1.30 Å) is beneath than would be accepted for individual bonds,[3] and this conciseness may announce stronger B-X π-bonding in the fluoride. A accomplished account invokes the symmetry-allowed overlap of a p alternate on the boron atom with the in-phase aggregate of the three analogously aggressive p orbitals on fluorine atoms.
Boron trifluoride is corrosive. Suitable metals for accessories administration boron trifluoride cover stainless steel, monel, and hastelloy. In attendance of damp it corrodes steel, including stainless steel. It reacts with polyamides. Polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinylidene fluoride, and polypropylene appearance satisfactory resistance. The grease acclimated in the accessories should be fluorocarbon based, as boron trifluoride reacts with the hydrocarbon-based ones.
Uses
Boron trifluoride is a lot of chiefly acclimated as a reagent in amoebic chemistry, about as a Lewis acid.
It initiates polymerisation reactions of unsaturated compounds such as polyethers
It is used as a agitator in some isomerization, alkylation, esterification, condensation, Mukaiyama aldol addition, and added reactions
It is activated as dopant in ion implantation
It is used for p-type dopant for epitaxially developed silicon
It is acclimated in acute neutron detectors in ionization accommodation and accessories to adviser radiation levels in the Earth's atmosphere
It is used in fumigation
It is used as a alteration for soldering magnesium
It is used to adapt diborane
Boron trifluoride was apparent in 1808 by Joseph Louis Gay-Lussac and Louis Jacques Thénard, who were aggravating to abstract "fluoric acid" (i.e. hydrofluoric acid) by accumulation calcium fluoride with vitrified boric acid; the consistent vapours bootless to compose glass, so they called it fluoboric gas.
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