Formation of cis-[Rf(CO)Re(CO)4Hal]Na complexes as an evidence of halogen-metal exchange between [Re(CO)5]Na and polyfluorinated aryl and vinyl halides

Abstract

Halo(acyl)rhenate complexes cis-[Rf(CO)Re(CO)4Hal]Na (Hal = Cl, Br; Rf = C6F5, trans-(CF3)3CCF== CF) are the primary products of the reactions of [Re(CO)5]Na with the corresponding aryl or vinyl halides RfHal.Key words: pentacarbonylrhenate anion, carbonylmetallates, halogen-metal exchange, nucleophilic aromatic substitution, nucleophilic vinylic substitution.