closo-Borate aryliodonium zwitterions: convenient intermediates for functional closo-borane derivatives and molecular materials

Zwitterionic aryliodonium derivatives of closo-borates are attractive intermediates in regioselective functionalization of anionic boron clusters through nucleophilic substitution with halides, and N-, O- and C-centered reagents. They are easily available in high yields by highly regioselective direct aryliodination of the closo-borate anions with ArIII species, typically PhI(OAc)2 and undergo four types of transformations: substitution through a rearrangement of a 10-I-3 species, dissociation t