Abstract: | Four new well‐defined CuI complexes bearing a C2F5 ligand have been prepared and fully characterized: [(Ph3P)2CuC2F5] ( 2 ), [(bpy)CuC2F5] ( 3 ), [(Ph3P)Cu(phen)C2F5] ( 4 ), and [(IPr*)CuC2F5] ( 5 ). X‐ray structures of all four have been determined, showing that the C2F5‐ligated Cu atom can be di‐ ( 5 ), tri‐ ( 2 and 3 ), and tetracoordinate ( 4 ). The mixed phen‐PPh3 complex 4 is a highly efficient fluoroalkylating agent for a broad variety of acid chlorides. This high‐yielding transformation represents the first general method for the synthesis of RCOC2F5 from the corresponding RCOCl. |