Exploring the Te(II)/Te(IV) Redox Couple of a Tellurorosamine Chromophore: Photophysical, Photochemical, and Electrochemical Studies
Nayanika Kalita,
Matthew R. Crawley,
Lauren E. Rosch
et al.
Abstract:A tellurorosamine dye [Te(II)] undergoes aerobic photooxidation. Although Te(IV) species have been used in a number of oxidations, key Te(IV)-oxo and Te(IV)-bis(hydroxy) intermediates are challenging to study. Under aerobic irradiation with visible light, Te(II) (λ max = 600 nm) transforms into a Te(IV) species (λ max = 669 nm). The resultant Te(IV) species is not stable in the dark or at −20 °C, decomposing back to Te(II) and other byproducts over many hours. To eliminate the structural ambiguity of the Te(IV… Show more
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