The reduction behavior of pentacarbonylpyridinechromium, -molybdenum and -tungsten complexes

. Zeitschrift fuer Naturforschung, Teil B: Anorganische Chemie, Organische Chemie 39B (6): 801--807 (1984)


The redn. of group VIB metal pentacarbonyl complexes and of iodomethylates of 4-trimethylsilyl-, 4-acetyl- and 4-cyanopyridine was investigated. Information on the dissocn. of the complexes and on the potential and reversibility of the 1-electron redn. was obtained by cyclic voltammetry in DMF, whereas ESR studies of the primary redn. products in the 4-acetylpyridine series revealed the distribution of the unpaired electron. The LUMO is a ligand-centered p*-orbital in the 4-cyanopyridine complexes, thus confirming assignments from photochem. The results allow an assessment to be made of both N-coordination and substituent effects at the heterocyclic ligand. on SciFinder(R)

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