Silicide hydride explained

A silicide hydride is a mixed anion compound that contains silicide (Si4− or clusters) and hydride (H−) anions. The hydrogen is not bound to silicon in these compounds. These can be classed as interstitial hydrides, Hydrogenated zintl phases, or Zintl phase hydrides.[1] In the related silanides, SiH3− anions or groups occur. Where hydrogen is bonded to the silicon, this is a case of anionic hydride, and where it is bonded to a more complex anion, it would be termed polyanionic hydride.[1]

Silicide hydrides may be prepared by heating a Zintl phase or metal silicide under hydrogen pressure, of perhaps 20 atmospheres.[2]

Properties

In CaSiD1+x the deuterium atom (D) fits in a tetrahedral hole between three calcium and one silicon atoms. The Si-D distance is 1.82 Å, quite a bit further than then a Si-H covalent bond.[3]

List

formulasystemspace groupunit cell Åvolumedensitycommentreference
Li4Si2HorthorhombicCmmmzigzag Si chains Si-Si 2.39[4]
CaSiH
CaSiH1+x x<1.2orthorhombicPnmaa = 14.4884, b = 3.8247, c = 11.2509, Z = 3zigzag Si chains Si-Si 2.47
CaAlSiHtrigonalZ=1Al-H bond semimetal
Ca2SiH2.41amorphousa=5.969 b=3.6146 c=6.815 reversible hydrogen storage
Ca5Si3H0.53tetrahedralI4/mcma=7.6394 c=14.7935 Z=4863.33[5]
SrSiH1.6orthorhombicPnma[6]
SrAlSiHP3m1Al-H bond semimetal
SrGaSiHtrigonalP3m1Z=1grey; Ga-H 1.71 semimetal[7]
Sr21Si2O5H21+xcubicFdma = 19.1190[8]
BaSiH3.4orthorhombicPnma
Ba3Si4Hx (x = 1–2) tetrahedralI4/mcma ≈ 8.44, c ≈ 11.95, Z = 8Si46– in a butterfly-shape
Ba21Si2O5H21+xcubicFdma = 20.336
BaAlSiHAl-H bond semimetal
BaGaSiHtrigonalP3m1a=4.2934 c=5.186 Z=182.79grey; air stable; Ga-H 1.71 semimetal
BaGaSiDtrigonalP3m1a=4.2776 c=5.1948 Z=182.32grey
LaFeSiHtetragonalP4/nmma=4.0270 c=8.0374[9]
LaFeSiHorthorhombicCmmea=5.6831 b=5.7037 c=7.9728at 15K; superconductor Tc=9.7K[10]
La3Pd5SiD~1.6orthorhombicImmaa=13.193 b=7.638 c=7.916801.8<9.5 bar[11]
La3Pd5SiD~2.71orthorhombicImmaa=13.102 b=7.673 c=8.168821.3[12]
La3Pd5SiD~5orthorhombicPmnba=13.16 b=7.91 c=8.20854>75 bar[13]
BaLaSi2D0.80orthorhombicCmcma = 4.6443, b = 15.267, c = 6.7630[14]
NdScSiH1.5tetrahedralI4/mmma=4.221 c=16.928 Z=4[15]
EuSiH1.8orthorhombicPnma
GdMnSiHtetragonalP4/nmm[16]
GdFeSiHtetragonalP4/nmma=3.901 c=7.503114.2[17]
GdCoSiHtetragonalP4/nmma=3.879 c=7.439111.9[18]

Notes and References

  1. Book: Haussermann . U. . Kranak . V. F. . Puhakainen . K. . Fassler . T. F. . Zintl Phases: Principles and Recent Developments . 2011 . 139–161 . Hydrogenous Zintl Phases: Interstitial Versus Polyanionic Hydrides.
  2. Kranak . Verina F. . Benson . Daryn E. . Wollmann . Lukas . Mesgar . Milad . Shafeie . Samrand . Grins . Jekabs . Häussermann . Ulrich . Hydrogenous Zintl Phase Ba 3 Si 4 H x (x = 1–2): Transforming Si 4 "Butterfly" Anions into Tetrahedral Moieties . Inorganic Chemistry . 2 February 2015 . 54 . 3 . 756–764 . 10.1021/ic501421u. 25247666 .
  3. Wu. H.. Zhou. W.. Udovic. T. J.. Rush. J. J.. Yildirim. T.. 2006-12-07. Structure and hydrogen bonding in CaSiD 1 + x : Issues about covalent bonding. Physical Review B. en. 74. 22. 224101. 10.1103/PhysRevB.74.224101. 1098-0121.
  4. Häussermann. Ulrich. October 2008. Coexistence of hydrogen and polyanions in multinary main group element hydrides. Zeitschrift für Kristallographie. en. 223. 10. 628–635. 10.1524/zkri.2008.1016. 96199481 . 0044-2968.
  5. Wu. Hui. Zhou. Wei. Udovic. Terrence J.. Rush. John J.. Yildirim. Taner. July 2008. Structural variations and hydrogen storage properties of Ca5Si3 with Cr5B3-type structure. Chemical Physics Letters. en. 460. 4–6. 432–437. 10.1016/j.cplett.2008.06.018.
  6. Armbruster. Markus. Wörle. Michael. Krumeich. Frank. Nesper. Reinhard. October 2009. Structure and Properties of Hydrogenated Ca, Sr, Ba, and Eu Silicides. Zeitschrift für anorganische und allgemeine Chemie. en. 635. 12. 1758–1766. 10.1002/zaac.200900220.
  7. Evans. Michael J.. Holland. Gregory P.. Garcia-Garcia. Francisco J.. Häussermann. Ulrich. 2008-09-10. Polyanionic Gallium Hydrides from AlB 2 -Type Precursors AeGaE (Ae = Ca, Sr, Ba; E = Si, Ge, Sn). Journal of the American Chemical Society. en. 130. 36. 12139–12147. 10.1021/ja803664y. 18698774 . 0002-7863.
  8. Jehle. Michael. Hoffmann. Anke. Kohlmann. Holger. Scherer. Harald. Röhr. Caroline. February 2015. The 'sub' metallide oxide hydrides Sr 21 Si 2 O 5 H 12 + x and Ba 21 M 2 O 5 H 12 + x (M = Zn, Cd, Hg, In, Tl, Si, Ge, Sn, Pb, As, Sb, Bi). Journal of Alloys and Compounds. en. 623. 164–177. 10.1016/j.jallcom.2014.09.228.
  9. Bernardini. F.. Garbarino. G.. Sulpice. A.. Núñez-Regueiro. M.. Gaudin. E.. Chevalier. B.. Méasson. M.-A.. Cano. A.. Tencé. S.. 2018-03-12. Iron-based superconductivity extended to the novel silicide LaFeSiH. Physical Review B. en. 97. 10. 100504. 10.1103/PhysRevB.97.100504. 1701.05010 . 11584/247860 . 119004395 . 2469-9950. free.
  10. Bernardini. F.. Garbarino. G.. Sulpice. A.. Núñez-Regueiro. M.. Gaudin. E.. Chevalier. B.. Méasson. M.-A.. Cano. A.. Tencé. S.. 2018-03-12. Iron-based superconductivity extended to the novel silicide LaFeSiH. Physical Review B. en. 97. 10. 100504. 10.1103/PhysRevB.97.100504. 1701.05010 . 11584/247860 . 119004395 . 2469-9950. free.
  11. Tencé. Sophie. Mahon. Tadhg. Gaudin. Etienne. Chevalier. Bernard. Bobet. Jean-Louis. Flacau. Roxana. Heying. Birgit. Rodewald. Ute Ch.. Pöttgen. Rainer. October 2016. Hydrogenation studies on NdScSi and NdScGe. Journal of Solid State Chemistry. en. 242. 168–174. 10.1016/j.jssc.2016.02.017.
  12. Tencé. Sophie. Mahon. Tadhg. Gaudin. Etienne. Chevalier. Bernard. Bobet. Jean-Louis. Flacau. Roxana. Heying. Birgit. Rodewald. Ute Ch.. Pöttgen. Rainer. October 2016. Hydrogenation studies on NdScSi and NdScGe. Journal of Solid State Chemistry. en. 242. 168–174. 10.1016/j.jssc.2016.02.017.
  13. Tencé. Sophie. Mahon. Tadhg. Gaudin. Etienne. Chevalier. Bernard. Bobet. Jean-Louis. Flacau. Roxana. Heying. Birgit. Rodewald. Ute Ch.. Pöttgen. Rainer. October 2016. Hydrogenation studies on NdScSi and NdScGe. Journal of Solid State Chemistry. en. 242. 168–174. 10.1016/j.jssc.2016.02.017.
  14. Werwein. Anton. Kohlmann. Holger. 2020-07-31. Synthesis and Crystal Structure of BaLaSi 2 H 0.80. Zeitschrift für anorganische und allgemeine Chemie. en. 646. 14. 1227–1230. 10.1002/zaac.202000152. 219060294 . 0044-2313. free.
  15. Tencé. Sophie. Mahon. Tadhg. Gaudin. Etienne. Chevalier. Bernard. Bobet. Jean-Louis. Flacau. Roxana. Heying. Birgit. Rodewald. Ute Ch.. Pöttgen. Rainer. October 2016. Hydrogenation studies on NdScSi and NdScGe. Journal of Solid State Chemistry. en. 242. 168–174. 10.1016/j.jssc.2016.02.017.
  16. Ovchenkova. I. A.. Nikitin. S. A.. Tereshina. I. S.. Karpenkov. A. Yu.. Ovchenkov. Y. A.. Ćwik. J.. Koshkid’ko. Yu. S.. Drulis. H.. 2020-10-14. Hydrogen-induced extremely large change in Curie temperatures in layered GdTSiH (T = Mn, Fe, Co). Journal of Applied Physics. en. 128. 14. 143903. 10.1063/5.0020513. 225150947 . 0021-8979.
  17. Ovchenkova. I. A.. Nikitin. S. A.. Tereshina. I. S.. Karpenkov. A. Yu.. Ovchenkov. Y. A.. Ćwik. J.. Koshkid’ko. Yu. S.. Drulis. H.. 2020-10-14. Hydrogen-induced extremely large change in Curie temperatures in layered GdTSiH (T = Mn, Fe, Co). Journal of Applied Physics. en. 128. 14. 143903. 10.1063/5.0020513. 225150947 . 0021-8979.
  18. Ovchenkova. I. A.. Nikitin. S. A.. Tereshina. I. S.. Karpenkov. A. Yu.. Ovchenkov. Y. A.. Ćwik. J.. Koshkid’ko. Yu. S.. Drulis. H.. 2020-10-14. Hydrogen-induced extremely large change in Curie temperatures in layered GdTSiH (T = Mn, Fe, Co). Journal of Applied Physics. en. 128. 14. 143903. 10.1063/5.0020513. 225150947 . 0021-8979.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Silicide hydride".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.