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A Study on the absorption spectra of Br$$^{-}$$, Br$$_{2}$$$$^{-.}$$, Br$$_{3}$$$$^{-}$$ in aqueous solutions at elevated temperatures

Lin, M.; Muroya, Yusa*; Katsumura, Yosuke*; Archirel, P.*; Van-Oanh, N. T.*; Nagaishi, Ryuji ; Kumagai, Yuta   ; Mostafavi, M.*

The temperature dependent absorption spectra of Br$$^{-}$$, Br$$_{2}$$$$^{-.}$$ and Br$$_{3}$$$$^{-}$$ have been investigated by pulse radiolysis or steady-state irradiation. The spectra of Br$$_{2}$$$$^{-.}$$ and Br$$_{3}$$$$^{-}$$ exhibit almost no shift at the absorption maximum, while that of Br$$^{-}$$ shows a red-shift with increasing temperature. Quantum chemical calculations have been also performed to unveil the nature of the spectral shift of Br$$^{-}$$.

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