Mercury(II) hydroxide

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Mercury(II) hydroxide
Identifiers
PubChem 12989292
ChemSpider 14227333
Jmol-3D images Image 1
Properties
Molecular formula H2HgO2
Molar mass 234.605
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Mercury(II) hydroxide or mercury dihydroxide is an inorganic metal hydroxide with the chemical formula HgH2O2 or more commonly written as Hg(OH)2.

Synthesis[edit]

It is not possible to make the chemical by adding OH- to Hg2+ in aqueous solution since this merely precipitates yellow solid HgO, although it is possible that Hg(OH)2 is momentarily produced during the reaction.[1]

The first experimental evidence for the existence of the molecule was reported by Wang and Andrews in 2004.[1] They produced it by irradiating a frozen mixture of mercury, oxygen and hydrogen with light from a mercury arc lamp. The mixture had been produced by evaporating mercury atoms at 50 °C into a gas consisting of neon, argon or deuterium (in separate experiments) plus 2 to 8% hydrogen and 0.2 to 2.0% oxygen. The mixture was then condensed at 5 kelvin onto a caesium iodide window through which it could be irradiated.[1]

References[edit]

  1. ^ a b c Xuefeng Wang; Lester Andrews (November 18, 2004). "Infrared Spectrum of Hg(OH)2 in Solid Neon and Argon". Inorganic Chemistry 44 (1): 108–11. doi:10.1021/ic048673w.