Abstract

The acetoxy-functionalized bis(imidazolyl)borate [B(Im N -Me) 2(OC( O)Me)Me] − (= L OAc ) is synthesized by the reaction of the alkoxy precursor [B(Im N -Me) 2(OPr i)Me] − (= L OiPr ) with acetic acid. In the presence of weak Brønstead acid, migration of nickel-bound acetate anion to the boron center giving L OAc occurs. The boron–acetoxy linkage survives upon the treatment of the nickel complexes with OH −, although the acetoxy group on L OAc does not coordinate to the nickel center.

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