Chemistry:Gadolinium diiodide

From HandWiki
Gadolinium diiodide
2H-MoS2.png
Identifiers
3D model (JSmol)
Properties
GdI2
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).
Infobox references

Gadolinium diiodide is an inorganic compound, with the chemical formula of GdI2. It is an electride, with the ionic formula of Gd3+(I)2e,[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 (GdI2H0.97[5]).[6]

References

  1. 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. 
  2. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 1240–1242. ISBN 978-0-08-037941-8. 
  3. K Ahn, C Felser, R Seshadri, R.K Kremer, A Simon (May 2000). "Giant negative magnetoresistance in GdI2" (in en). Journal of Alloys and Compounds 303-304: 252–256. doi:10.1016/S0925-8388(00)00668-X. https://linkinghub.elsevier.com/retrieve/pii/S092583880000668X. Retrieved 2022-07-08. 
  4. François Nief (2010). "Non-classical divalent lanthanide complexes" (in en). Dalton Transactions 39 (29): 6589–6598. doi:10.1039/c001280g. ISSN 1477-9226. PMID 20631944. http://xlink.rsc.org/?DOI=c001280g. Retrieved 2022-07-08. 
  5. 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. ISSN 0044-2313.
  6. C. Michaelis, W. Bauhofer, H. Buchkremer-Hermanns, R. K. Kremer, A. Simon, G. J. Miller (December 1992). "LnHal2Hn – Neue Phasen in den ternären Systemen Ln/Hal/H (Ln = Lanthanoid, Hal = Br, I) III. Physikalische Eigenschaften" (in de). Zeitschrift für anorganische und allgemeine Chemie 618 (12): 98–106. doi:10.1002/zaac.19926180118. ISSN 0044-2313. https://onlinelibrary.wiley.com/doi/10.1002/zaac.19926180118. Retrieved 2022-07-08. 
HI He
LiI BeI2 BI3 CI4 NI3 I2O4,
I2O5,
I4O9
IF,
IF3,
IF5,
IF7
Ne
NaI MgI2 AlI3 SiI4 PI3,
P2I4
S ICl,
ICl3
Ar
KI CaI2 Sc TiI4 VI3 CrI3 MnI2 FeI2 CoI2 NiI2 CuI ZnI2 Ga2I6 GeI2,
GeI4
AsI3 Se IBr Kr
RbI SrI2 YI3 ZrI4 NbI5 Mo Tc Ru Rh Pd AgI CdI2 InI3 SnI4,
SnI2
SbI3 TeI4 I Xe
CsI BaI2   HfI4 TaI5 W Re Os Ir Pt AuI Hg2I2,
HgI2
TlI PbI2 BiI3 Po AtI Rn
Fr RaI2   Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
La Ce Pr Nd Pm SmI2 Eu Gd TbI3 Dy Ho Er Tm Yb Lu
Ac ThI4 Pa UI3,
UI4
Np Pu Am Cm Bk Cf EsI3 Fm Md No Lr