Chemistry Question #484
chris, a 20 year old male from Saint John asks on December 25, 2001,
Boron trifluoride (BF3) is non-polar, yet is much more soluble in a polar tetrhydrofuran (THF) than in non-polar solvents. Can you explain why BF3 is non-polar; and rationalize this apparent exception to the "like dissolve like" rule and illustrate your explanation by showing the interaction between BF3 and THF. Thanks alot for your time.
viewed 15533 times
answered on December 27, 2001
BF3 reacts with any ether to form a new compound BF3.Et2O where the B has a negative charge and the O a positive one; likewise THF+_BF3-. This has a much higher boiling point than either and is soluble in polar organic solvents.
Add to or comment on this answer using the form below.
Note: All submissions are moderated prior to posting.
If you found this answer useful, please consider making a small donation to science.ca.