THE PREDICTION OF THE F-19 NMR-SPECTRA OF FLUORO-SUBSTITUTED ARENETRICARBONYLCHROMIUM COMPLEXES

The tricarbonylchromium complexes of the following derivatives of fluorobenzene have been prepared: 2,4- and 3,5-dimethyl-, 2,4,6-trimethyl-, 3,4- and 3,5-dimethoxy- and 4-methoxy-2-methylfluorobenzene, 4-fluorocumene, 4-fluoro-N,N-dimethylaniline, 3-fluoro-2-methoxyaniline and 4-fluoro-2-methylacetophenone. Preparative, microanalytical, IR, UV-Vis and H-1 and F-19 NMR spectral data are presented for these new compounds. Both literature and new F-19 NMR spectral data have been analysed for thirty-five monofluoro complexes and seven difluoro complexes. A statistical prediction method for both these types of complexes is presented with correlation coefficients of observed versus predicted line positions of 0.986 and 0.993, respectively.