Gadolinium diiodide explained
Gadolinium diiodide is an inorganic compound, with the chemical formula of GdI2. It is an electride, with the ionic formula of Gd3+(I−)2e−, and therefore not a true gadolinium(II) compound. It is ferromagnetic at 276 K with a saturation magnetization of 7.3 B; it exhibits a large negative magnetoresistance (~70%) at 7 T near room temperature.[1] It can be obtained by reacting gadolinium and gadolinium(III) iodide at a high temperature:[2]
Gd + 2 GdI3 → 3 GdI2
It can react with hydrogen at high temperature (800 °C) to obtain gadolinium hydrogen iodide (GdI2H0.97[3]).[4]
Notes and References
- Journal of Alloys and Compounds. 303-304. en. May 2000. 252–256. 10.1016/S0925-8388(00)00668-X. Giant negative magnetoresistance in GdI2. 2022-07-08. K Ahn, C Felser, R Seshadri, R.K Kremer, A Simon. 2022-01-23. https://web.archive.org/web/20220123004528/https://linkinghub.elsevier.com/retrieve/pii/S092583880000668X. live.
- Dalton Transactions. 39. 29. en. 1477-9226. 2010. 6589–6598. 10.1039/c001280g. Non-classical divalent lanthanide complexes. 2022-07-08. François Nief. 20631944 .
- Michaelis, C.; Mattausch, H.; Simon, A. LnHal2Hn - new phases in the ternary system lanthanide/halogen/hydrogen. II: preparation. Zeitschrift fuer Anorganische und Allgemeine Chemie, 1992. 610: 23-27. .
- Zeitschrift für anorganische und allgemeine Chemie. 618. 12. de. 0044-2313. December 1992. 98–106. 10.1002/zaac.19926180118. LnHal2Hn – Neue Phasen in den ternären Systemen Ln/Hal/H (Ln = Lanthanoid, Hal = Br, I) III. Physikalische Eigenschaften. 2022-07-08. C. Michaelis, W. Bauhofer, H. Buchkremer-Hermanns, R. K. Kremer, A. Simon, G. J. Miller. 2022-07-11. https://web.archive.org/web/20220711181603/https://onlinelibrary.wiley.com/doi/10.1002/zaac.19926180118. live.
