四氟化镨是镧系元素镨的氟化物之一,化学式为PrF4,它于90 °C分解为三氟化镨和氟气。[2]
制备
它可由十一氧化六镨和氟气在无水氟化氢中紫外线照射下反应得到。[1]它也能由三氟化镨或十一氧化六镨和二氟化氪反应得到,以氧化物为原料产率可达100%。[2]另一种方法是Na2PrCl5经过氟化得到Na2PrF6,它在无水氟化氢中分解,得到四氟化镨。[3]
![{\displaystyle {\mathsf {PrO_{2}+2KrF_{2}\ {\xrightarrow {}}\ PrF_{4}+O_{2}+2Kr}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/d8da29e3ef86612eba2b3044960424e52e4282d1)
![{\displaystyle {\mathsf {Na_{2}[PrF_{6}]+2HF\ {\xrightarrow {}}\ PrF_{4}\downarrow +2NaHF_{2}}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/23bd4eb6a5139fa40e4bf0d851f860e3622888cc)
参考文献
- ^ 1.0 1.1 Z Mazej. Room temperature syntheses of lanthanoid tetrafluorides (LnF4, Ln = Ce, Pr, Tb). Journal of Fluorine Chemistry. 2002-12, 118 (1-2): 127–129 [2019-03-26]. doi:10.1016/S0022-1139(02)00223-3. (原始内容存档于2019-11-28) (英语).
- ^ 2.0 2.1 Spitsyn, V. I.; Kiselev, Yu. M.; Martynenko, L. I.; Prusakov, V. N.; Sokolov, V. B. Synthesis of praseodymium tetrafluoride(俄文). Doklady Akademii Nauk SSSR, 1974. 219 (3): 621-624. ISSN: 0002-3264.
- ^ J. Soriano, M. Givon, J. Shamir. The preparation of praseodymium tetrafluoride. Inorganic and Nuclear Chemistry Letters. 1966-1, 2 (1): 13–14 [2019-03-26]. doi:10.1016/0020-1650(66)80082-X. (原始内容存档于2019-08-10) (英语).