Cadmium hydride

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Cadmium hydride
Identifiers
CAS number 72172-64-6 N
Properties
Molecular formula CdH
2
Molar mass 113.419 g mol-1
Related compounds
Related compounds Mercury(II) hydride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Cadmium hydride (systematically named cadmium dihydride) is an inorganic compound with the chemical formula (CdH
2
)
n
(also written as ([CdH
2
]
)
n
or CdH
2
). It is an insoluble solid.

History[edit]

It was first reported by Glenn D. Barbaras in 1951 via the reaction of lithium aluminum hydride and dimethylcadmium in diethyl ether at −78 °C.[1]

Chemical properties[edit]

The compound decomposes at around 0 °C.

Molecular CdH2[edit]

Gaseous CdH2 was produced by the gas phase reaction of excited cadmium atoms with dihydrogen, H2, and the structure determined high-resolution infrared emission spectra. The molecule is linear, with a bond length of 168.3 pm.[2]

Cs3CdH5[edit]

The compound, Cs3CdH5, prepared by the reaction of caesium hydride, CsH, and cadmium metal powder at high temperature contains the CdH42– ion, along with caesium cations, Cs+, and hydride anions, H. The tetrahedral anion is an example of an ionic complex of CdH2. The average Cd-H bond length in CdH42– is 182pm.[3]

References[edit]

  1. ^ Glenn D. Barbaras, Clyde Dillard, A. E. Finholt, Thomas Wartik, K. E. Wilzbach, H. I. Schlesinger (1951). "The Preparation of the Hydrides of Zinc, Cadmium, Beryllium, Magnesium and Lithium by the Use of Lithium Aluminum Hydride". J. Am. Chem. Soc. 73 (10): 4585–4590. doi:10.1021/ja01154a025. 
  2. ^ Shayesteh, Alireza; Yu, Shanshan; Bernath, Peter F. (2005). "Gaseous HgH2, CdH2, and ZnH2". Chemistry - A European Journal 11 (16): 4709–4712. doi:10.1002/chem.200500332. ISSN 0947-6539. 
  3. ^ Bortz, M.; Gutmann, M.; Yvon, K. (1999). "Synthesis and structure determination of the first ternary cadmium hydride, Cs3CdH5". Journal of Alloys and Compounds 285 (1-2): L19–L21. doi:10.1016/S0925-8388(99)00031-6. ISSN 0925-8388. 

External links[edit]

  • Wang, Xuefeng; Andrews, Lester (2004). "Infrared Spectra of Zn and Cd Hydride Molecules and Solids". Journal of Physical Chemistry A 108 (50): 11006–11013. doi:10.1021/jp046414m.