Title: 1,3-Diaryltriazenido complexes of bis-cyclopentadienylmolybdenum. Preparation and electrochemical behaviour
Abstract: The new complexes [Mo(η-C5H5)2(p-R1C6H4NNN-p-C6H4R2)][PF6] (1) (R1 = R2 = H, F, CH3, OCH3; R1 = H, R2 = CH3, OCH3; R1 = CH3, R2 OCH3) have been prepared. The electrochemical behaviour of these complexes in acetonitrile has been studied by cyclic voltammetry and constant potential electrolysis at platinum electrodes. The complexes undergo two reversible one-electron reductions to species which are stable on the cyclic voltammetry time scale, but the uptake of electrons appears to be followed by loss of the triazenido ligand. The oxidative electrochemistry of the complexes can be rationalized in terms of a disproportionation occurring after the first one-electron oxidation. Both reduction and oxidation potentials show good linear correlations with σ+ Hammett parameters, providing evidence for the mesomeric influence of ligand R1 and R2 substituents on the metal orbitals involved in the redox processes.
Publication Year: 1980
Publication Date: 1980-07-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 8
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