Mercury(II) hydride
| Names | |
|---|---|
| IUPAC name
Mercury(II) hydride | |
| Other names
Mercurane Mercuric hydride | |
| Identifiers | |
3D model (JSmol) |
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PubChem CID |
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| Properties | |
| HgH 2 | |
| Molar mass | 202.61 g mol−1 |
| Related compounds | |
Related compounds |
Zinc hydride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Mercury(II) hydride (systematically named mercurane(2) and dihydridomercury) is an inorganic compound with the chemical formula HgH
2 (also written as [HgH
2]). It is both thermodynamically and kinetically unstable at ambient temperature, and as such, little is known about its bulk properties. However, it can also be a white, crystalline solid, which is kinetically stable at temperatures below −125 °C (−193 °F), which was synthesized for the first time in 1951.
Mercury(II) hydride is the second simplest mercury hydride (after the significantly less stable mercury(I) hydride). Due to its instability, it has no practical industrial uses. However, in analytical chemistry, mercury(II) hydride is fundamental to certain forms of spectrometric techniques used to determine mercury content. In addition, it is investigated for its effect on high sensitivity isotope-ratio mass spectrometry methods that involve mercury, such as MC-ICP-MS, when used to compare thallium to mercury.