铑
氧化态
化学
氧化剂
过渡金属
质谱法
氧化还原
金属
化学状态
结晶学
分析化学(期刊)
无机化学
催化作用
X射线光电子能谱
有机化学
物理
核磁共振
色谱法
作者
Mayara da Silva Santos,Tony Stüker,Max Flach,Olesya S. Ablyasova,Martin Timm,Bernd von Issendorff,Konstantin Hirsch,Vicente Zamudio-Bayer,Sebastian Riedel,J. Tobias Lau
标识
DOI:10.1002/anie.202207688
摘要
Although the highest possible oxidation states of all transition elements are rare, they are not only of fundamental interest but also relevant as potentially strong oxidizing agents. In general, the highest oxidation states are found in the electron-rich late transition elements of groups 7-9 of the periodic table. Rhodium is the first element of the 4d transition metal series for which the highest known oxidation state does not equal its group number of 9, but reaches only a significantly lower value of +6 in exceptional cases. Higher oxidation states of rhodium have remained elusive so far. In a combined mass spectrometry, X-ray absorption spectroscopy, and quantum-chemical study of gas-phase RhOn+ (n=1-4), we identify RhO3+ as the 1A1' trioxidorhodium(VII) cation, the first chemical species to contain rhodium in the +7 oxidation state, which is the third-highest oxidation state experimentally verified among all elements in the periodic table.
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