The oxidation of TcO2 with O2 in the presence of H2O at 250 °C was investigated; Tc2O7 and a red product were observed after the reaction. UV/Visible spectroscopy and a cerium titration on the “red” product are consistent with the presence of a reduced Tc species. It is proposed that the “red” product was formed by the hydrolysis of Tc2O7 to HTcO4 followed by the reduction of HTcO4. The reaction products of TcO2 with O2/H2O at 250 °C were also studied by mass spectrometry. The main dinuclear species were Tc2O7 and Tc2O5, while the main mononuclear species were TcO3 and HTcO4. The compound HTcO4 and associated hydrates were simulated to identify candidate structures for the “red” product; however, neither the acid nor any related hydrates exhibited the UV/Visible signature of the “red” product.

中文翻译：

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在二氧化锝与氧气和水的氧化过程中形成的锝物种的性质。

研究了在 250 °C 下在 H2O 存在下用 O2 氧化 TcO2；反应后观察到 Tc2O7 和红色产物。紫外/可见光谱和“红色”产物上的铈滴定与还原的 Tc 物质的存在一致。提出“红色”产物是通过将 Tc2O7 水解为 HTcO4，然后还原 HTcO4 形成的。还通过质谱法研究了 TcO2 与 O2/H2O 在 250 °C 下的反应产物。主要的双核物种为 Tc2O7 和 Tc2O5，而主要的单核物种为 TcO3 和 HTcO4。模拟了化合物 HTcO4 和相关的水合物，以确定“红色”产物的候选结构；然而，酸和任何相关的水合物都没有表现出“红色”产品的紫外线/可见光特征。