TETRABUTYLAMMONIUM TETRABUTYLBORATE

Tetrabutylammonium tetrabutylborate can be used as:

• A mild reducing agent to synthesize oxovanadium reduced cluster.
• A co-initiator in radical photopolymerization of trimethylolpropane triacrylate in the presence of dyes with diazine structure.

Dissolve it in MeOH or acetone, and crystallise by adding distilled water. It also crystallises from EtOH or EtOAc. Dry it in a vacuum at 70o. It has also been successively recrystallised from isopropyl ether, isopropyl ether/acetone (50:1) and isopropyl ether/EtOH (50:1) for 10hours, then isopropyl ether/acetone for 1hour, and dried at 65o under reduced pressure for 1 week. [Kondo et al. J Chem Soc, Faraday Trans 1 76 812 1980, Beilstein 4 III 293, 4 III 558.]