518293-08-8Relevant articles and documents
The role of water in the oligomerization equilibria involving Bis(pentafluorophenyl)borinic acid in dichloromethane solution
Beringhelli, Tiziana,D'Alfonso, Giuseppe,Donghi, Daniela,Maggioni, Daniela,Mercandelli, Pierluigi,Sironi, Angelo
, p. 5493 - 5502 (2008/10/09)
The association equilibria of water involving bis(pentafluorophenyl)borinic acid in dichloromethane solution was investigated. The amount of water present in solution affected the rate of attainment of the 1m/1t equilibrium, the oligomerization being exceedingly slow in anhydrous conditions. The catalytic role of water can be attributed to the increased nucleophilicity of the BOH group upon water coordination, which allows alternative aggregation pathways. Semiempirical computations, at the PM3 level, provided a picture of the pligomerization in the presence and in the absence of water that well agrees with the experimental findings.