In one of our recent studies, we have found that in the presence of acetonitrile or DMF (solvents with high polarity index) the parent compound is oxidized (that we believe is a SET reaction/oxidation). This new oxidized product has been characterized by regular spectroscopic techniques.
I am eager to know whether the solvent can alter the course of the reaction anyhow.
Abhik, can you let us know if the product is owed to oxidative dimerization or whether its an oxo adduct?
Panayiotis Koutentis the oxidative product formed because of the deprotonation (in absence of any base, solvents used for absorption spectroscopic measurements are HPLC grade as well as dried prior to use). Please find the attached file showing the Visible region of the absorption spectrum and the schematic representation for your reference.
OK and you have structure proof for the cation? Most benzotriaziniums cations are yellow-orange in color. How do you know its the cation and not the quinonimine (which are purple)?
Yes, we do have that in one case, though we could not get the single crystals from acetonitrile, but from methanol.
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