Übergangsmetall-π-Komplexe mit ungesättigten und aromatischen Heterocyclen, IV π-Komplexe methylsubstituierter Pyridinderivate mit Chrom(0)

Pyridine π-complexes are prepared by treating 2,6-dimethylpyridine and 2,3,5,6-tetramethylpyridine with Cr(CO)6. Thus, tricarbonyl(2,6-dimethylpyridine)chromium(0) and tricarbonyl(2,3,5,6-tetramethylpyridine)chromium(0) are obtained. IR and 1H NMR spectra are discussed together with those of tricarbonyl(pentamethylpyridine)chromium(0) and tricarbonyl(2,4,6-trimethylpyridine)chromium(0).