From Wikipedia, the free encyclopedia
Gadolinium diiodide
Identifiers
InChI=1S/Gd.2HI/h;2*1H/q+2;;/p-2
Key: DOUOICPRZGCJLL-UHFFFAOYSA-L
Properties
Gd I 2
Molar mass
411.06 g·mol−1
Appearance
bronze solid
[1]
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Gadolinium diiodide is an
inorganic compound , with the
chemical formula of GdI2 . It is an
electride , with the ionic formula of Gd3+ (I− )2 e− ,
[2] 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.
[3] It can be obtained by reacting
gadolinium and
gadolinium(III) iodide at a high temperature:
[4]
Gd + 2 GdI3 → 3 GdI2
It can react with hydrogen at high temperature (800 °C) to obtain gadolinium hydrogen iodide (GdI2 H0.97
[5] ).
[6]
References
^ Haynes, William M. (2012). CRC handbook of chemistry and physics : a ready-reference book of chemical and physical data . Boca Raton, Fla.: CRC. p. 84.
ISBN
978-1-4398-8049-4 .
OCLC
793213751 .
^
Greenwood, Norman N. ; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.).
Butterworth-Heinemann . p. 1240–1242.
ISBN
978-0-08-037941-8 .
^ K Ahn, C Felser, R Seshadri, R.K Kremer, A Simon (May 2000).
"Giant negative magnetoresistance in GdI2" . Journal of Alloys and Compounds . 303–304: 252–256.
doi :
10.1016/S0925-8388(00)00668-X .
Archived from the original on 2022-01-23. Retrieved 2022-07-08 . {{
cite journal }}
: CS1 maint: multiple names: authors list (
link )
^ François Nief (2010).
"Non-classical divalent lanthanide complexes" . Dalton Transactions . 39 (29): 6589–6598.
doi :
10.1039/c001280g .
ISSN
1477-9226 .
PMID
20631944 . Retrieved 2022-07-08 .
^ Michaelis, C.; Mattausch, H.; Simon, A. LnHal2 Hn - new phases in the ternary system lanthanide/halogen/hydrogen. II: preparation. Zeitschrift fuer Anorganische und Allgemeine Chemie , 1992. 610: 23-27.
ISSN
0044-2313 .
^ C. Michaelis, W. Bauhofer, H. Buchkremer-Hermanns, R. K. Kremer, A. Simon, G. J. Miller (December 1992).
"LnHal2 Hn – Neue Phasen in den ternären Systemen Ln/Hal/H (Ln = Lanthanoid, Hal = Br, I) III. Physikalische Eigenschaften" . Zeitschrift für anorganische und allgemeine Chemie (in German). 618 (12): 98–106.
doi :
10.1002/zaac.19926180118 .
ISSN
0044-2313 .
Archived from the original on 2022-07-11. Retrieved 2022-07-08 . {{
cite journal }}
: CS1 maint: multiple names: authors list (
link )
Salts and covalent derivatives of the
iodide ion