476639-90-4 | Potassium pentafluororoethyltrifluoroborate

Packsize	Purity	Availability	Price	Discounted Price
1g		in stock	$153.00	$107.00
5g		in stock	$490.00	$343.00

Description

• Catalog Number: AG22086
• Chemical Name: Potassium pentafluororoethyltrifluoroborate
• CAS Number: 476639-90-4
• Molecular Formula: C2BF8K
• Molecular Weight: 225.9179
• MDL Number: MFCD18829809
• SMILES: F[B-](C(C(F)(F)F)(F)F)(F)F.[K+]

Upstream Synthesis Route

The upstream synthesis route of Potassium pentafluororoethyltrifluoroborate (K[RfBF4], where Rf represents a pentafluoroethyl group, C2F5) can be summarized as follows:

1. Synthesis of Pentafluoroethyl Iodide (C2F5I):
Start with tetrafluoroethylene (C2F4), which is fluorinated using iodine heptafluoride (IF7) to produce pentafluoroethyl iodide.

C2F4 + IF7 → C2F5I + IF5

2. Formation of Pentafluoroethyl Magnesium Iodide (C2F5MgI):
The pentafluoroethyl iodide is subjected to a Grignard reaction by reacting it with magnesium turnings in anhydrous diethyl ether.

C2F5I + Mg → C2F5MgI

3. Conversion to Pentafluoroethyltrifluoroborate (C2F5BF3):
The Grignard reagent (C2F5MgI) is then reacted with boron trifluoride (BF3) to form the pentafluoroethyltrifluoroborate.

C2F5MgI + BF3 → C2F5BF3 + MgIF2

4. Neutralization with Potassium Hydroxide (KOH):
Finally, the pentafluoroethyltrifluoroborate is neutralized with an aqueous solution of potassium hydroxide to yield potassium pentafluororoethyltrifluoroborate. The product precipitates out of solution and is then filtered and washed.

C2F5BF3 + KOH → K[RfBF4] + H2O

The precipitated product, K[RfBF4], is isolated by filtration, washed to remove impurities, and dried to acquire the final compound in its pure form. It should be noted that all reactions need to be carefully controlled and are typically conducted under inert atmosphere conditions to prevent moisture and air-sensitive reactions. Additionally, precautions are taken while handling reagents like iodine heptafluoride and boron trifluoride due to their high reactivity and toxicity.