二氧化铁
外观
二氧化铁 | |
---|---|
识别 | |
CAS号 | 12411-15-3 ![]() 64766-39-8(过氧化物) ![]() |
性质 | |
化学式 | FeO2 |
摩尔质量 | 87.84 g·mol−1 |
外观 | 固体 |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
二氧化铁是一种无机化合物,化学式为FeO2,它存在两种异构体,即激发态的过氧化物Fe(O2)和插入型二氧化物(inserted dioxide)OFeIVO,后者更稳定。[1]OFeO和乙烯在固态氩中反应,可以得到配合物(η2-C2H4)FeO2。[2]
Fe(O2)可由激光蒸发的铁和一氧化二氮反应得到,反应同时会生成FeO,但不会生成OFeO。[3]过氧化物FeIIO2也可通过无水FeCl3和过氧化氢反应得到。[4]五羰基铁和二氧化氮反应,得到FeO(NO2),它受热分解得到FeO2,研究人员认为它可能是含FeIII的自由基,或FeIV的氧化物。[5]黄铁矿型FeO2可由氧化铁和氧气在76 GPa反应,或氢氧化氧铁在92 GPa下分解制得,通过高压反应得到的FeO2的铁具有 2和 3价。[6]
单层FeO2具窄带隙(~0.6 eV),表现出半导体性质,对比FeS2(~2 eV)为半金属,而FeSe2和FeTe2则具有金属性。[7]
参考文献
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- ^ Qingyang Hu, Duck Young Kim, Wenge Yang, Liuxiang Yang, Yue Meng, Li Zhang, Ho-Kwang Mao. FeO2 and FeOOH under deep lower-mantle conditions and Earth’s oxygen–hydrogen cycles. Nature. 2016-06-09, 534 (7606): 241–244 [2022-09-03]. ISSN 0028-0836. doi:10.1038/nature18018. (原始内容存档于2022-06-19) (英语).
- ^ Mu Lan, Gang Xiang, Ya Nie, Dingyu Yang, Xi Zhang. The static and dynamic magnetic properties of monolayer iron dioxide and iron dichalcogenides. RSC Advances. 2016, 6 (38): 31758–31761 [2022-09-03]. ISSN 2046-2069. doi:10.1039/C6RA03480B (英语).
拓展阅读
[编辑]- Bo Gyu Jang, Jin Liu, Qingyang Hu, Kristjan Haule, Ho-Kwang Mao, Wendy L. Mao, Duck Young Kim, Ji Hoon Shim. Electronic spin transition in FeO 2 : Evidence for Fe(II) with peroxide O 2 2 −. Physical Review B. 2019-07-15, 100 (1) [2022-09-03]. ISSN 2469-9950. doi:10.1103/PhysRevB.100.014418 (英语).