Abstract: | In the reaction of C5H5Co(CO)(C3F7)I with isonitriles in the molár ratio the brown complexes C5H5Co(CNR)(C3F7)I are formed. The fluorine atoms of the α-CF2 groups are diastereotopic because of the asymmetric center at the Co atom. With (—)-α-phenylethylisonitrile a pair of diastereoisomers is obtained which could not be separated.C5H5Co(CO)(C3F7)I and C5H5Co(CNR)(C3F7)I react with excess isonitrile with the formation of benzene soluble, yellow salts C5H5Co(CNR)2(C3F7)]+I?, which can be transformed into the corresponding PF?6 salts. The new compounds were characterised by C, H, N, Co analyses, molecular weight determinations, IR, 1H NMR, 19F NMR, 13C NMR, ESCA and mass spectra. |