Lanthanum diiodide explained
Lanthanum diiodide is an iodide of lanthanum, with the chemical formula of LaI2. It is an electride, actually having a chemical formula of La3+[(I<sup>−</sup>)<sub>2</sub>e<sup>−</sup>].[1]
Preparation
Lanthanum diiodide can be obtained from the reduction of lanthanum(III) iodide with lanthanum metal under a vacuum at 800 to 900 °C:[2]
It can also be obtained by reacting lanthanum and mercury(II) iodide:
It was first created by John D. Corbett in 1961.[3]
Properties
Lanthanum diiodide is a blue-black solid with metallic lustre, which is easily hydrolyzed into the iodide oxide. It has a MoSi2-type structure, with the space group I4/mmm (No. 139).[4]
References
- Book: Holleman, Arnold F. . Walter de Gruyter GmbH & Co. KG . Anorganische Chemie Band 2. Nebengruppenelemente, Lanthanoide, Actinoide, Transactinoide . Berlin . 2017 . 978-3-11-051854-2 . 968134924 . de . 1789.
- Book: Brauer, Georg . Handbook of Preparative Inorganic Chemistry V1. . Elsevier Science . Burlington . 1963 . 978-0-323-16127-5 . 843200092 . 1081.
- Jungmann . Angelika . Claessen . R. . Zimmermann . R. . Meng . Ge . Steiner . P. . Hüfner . S. . Tratzky . S. . Stöwe . K. . Beck . H. P. . Photoemission of LaI2 and CeI2 . Zeitschrift für Physik B . Springer Science and Business Media LLC . 97 . 1 . 1995 . 0722-3277 . 10.1007/bf01317584 . 25–34. 1995ZPhyB..97...25J . 124057481 .
- Book: Riedel . Erwin . Janiak . Christoph . Meyer . Hans-Jürgen . Riedel, moderne anorganische Chemie . De Gruyter . Berlin . 2012 . 978-3-11-024900-2 . 781540844 . de . 240.
