碘化镧是一种无机化合物,化学式为LaI3。
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![{\displaystyle {\mathsf {2La+3I_{2}\ {\xrightarrow {\Delta }}\ 2LaI_{3}}}}](//wikimedia.org/api/rest_v1/media/math/render/svg/f2b5c2b5e391ce1aa28799a95f4dd8d2575d923a)
![{\displaystyle {\mathsf {La_{2}O_{3}+6NH_{4}I\ {\xrightarrow {350^{o}C}}\ 2LaI_{3}+6NH_{3}+3H_{2}O}}}](//wikimedia.org/api/rest_v1/media/math/render/svg/0fceb27e308a4e9811426c35dafb8c1f151d2be2)
碘化镧、磷酸镧和二氧化硅在800℃下反应,生成三碘化磷:[3]
- 5 LaI3 + 3 LaPO4 + 8 SiO2 → 3 PI3 + 3 I2 + 4 La2Si2O7
用THF萃取LaI3可以得到无色的LaI3(THF)4。[4]
David R. Lide (Ed.): CRC Handbook of Chemistry and Physics. 90th Edition (Internet Version: 2010), CRC Press/Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, S. 4-69.
Young, Ralph C.; Hastings, Jane L. Reaction of Lanthanum Oxide with Ammonium Iodide. Journal of the American Chemical Society (American Chemical Society (ACS)). 1937, 59 (4): 765–766. ISSN 0002-7863. doi:10.1021/ja01283a510.
Haschke, John M. Reactions of strontium, lanthanum, and europium iodides. Direct preparation of phosphorus triiodide from phosphates. Inorganic Chemistry (American Chemical Society (ACS)). 1976-03-01, 15 (3): 508–511. ISSN 0020-1669. doi:10.1021/ic50157a003.
Izod, Keith; Liddle, Stephen T.; Clegg, William. A Convenient Route to Lanthanide Triiodide THF Solvates. Crystal Structures of LnI3(THF)4 [Ln = Pr] and LnI3(THF)3.5 [Ln = Nd, Gd, Y]. Inorganic Chemistry (American Chemical Society (ACS)). 2003-12-09, 43 (1): 214–218. ISSN 0020-1669. doi:10.1021/ic034851u.