Spontaneous oxidation of xenon to Xe(II) by cationic Ag(II) in anhydrous hydrogen fluoride solutions
作者:Boris Zemva、Rika Hagiwara、William J. Casteel、Karel Lutar、Adolf Jesih、Neil Bartlett
DOI:10.1021/ja00168a032
日期:1990.6
AHF is catalytic to the interaction of Xe with Fsub 2} (Xe + Fsub 2} yields} XeFsub 2}), but XeFsub 2} precipitates AgFsub 2} from Ag(II) AHF solutions (e.g. AgFAsFsub6} + 2XeFsub 2} yields} Xesub 2}Fsub 3}AsFsub6} + AgFsub 2}). To maintain the Ag(I/II) catalyst the fluoride-ion donor, XeFsub 2}, must be neutralized with acid, e.g. 2Xe + 2Fsub 2} + AsFsub5} yields} Xesub 2}Fsub
conditions was achieved at the Boron‐Doped Diamond electrode in anhydrous hydrogen fluoride. Silver(I) oxidation and the F2 evolution reactions are well separated in the potential scale. Temperature of performing electrosynthesis as well as BF3 overpressure were found to be key variables of the process. Impedance spectroscopy measurements provided insight into the mechanism of formation of silver(II)
在无水氟化氢中掺硼的金刚石电极上,在恒电流和恒电位条件下首次成功地成功合成了多晶Ag II FBF 4和单晶Ag II F 2。银(I)氧化和F 2放出反应在电位范围内很好地分开。发现进行电合成的温度以及BF 3超压是该过程的关键变量。阻抗谱测量提供了对氟化银(II)形成机理的深入了解,指出了可溶于HF的Ag(BF 4)2的存在中间。产品的相纯度通过X射线衍射测定。