Ammonium hexachloroosmate(IV)

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Ammonium hexachloroosmate(IV)
Names
IUPAC name
Ammonium hexachloroosmate(IV)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.977 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 235-188-5
PubChem CID
  • InChI=1S/6ClH.2H3N.Os/h6*1H;2*1H3;/q;;;;;;;;+4/p-4
    Key: SRBXXQDKBKTWOC-UHFFFAOYSA-J
  • [NH4+].[NH4+].Cl[Os-2](Cl)(Cl)(Cl)(Cl)Cl
Properties
Cl6H8N2Os
Molar mass 439.01 g·mol−1
Appearancered crystals
Density 2.93 g/cm3
Melting point 170
poorly soluble
Hazards
GHS labelling:
GHS-pictogram-exclam.svg [1]
Warning
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Ammonium hexachloroosmate(IV) is an inorganic chemical compound with the chemical formula (NH4)2OsCl6. [2] [3]

Contents

Synthesis

Ammonium hexachloroosmate(IV) can be produced by the reduction of osmium(VIII) oxide with iron dichloride in an acidic medium in the presence of ammonium ions: [4] [5]

OsO4 + 4FeCl2 + 8HCl + 2NH4Cl → (NH4)2[OsCl6] + 3FeCl3 + 4H2O

Physical properties

Ammonium hexachloroosmate(IV) forms dark red crystals of the cubic system, [6] space group Fm3m, cell parameters a = 0.9729 nm, Z = 4.

It is poorly soluble in cold water. [7]

Chemical properties

The compound is reduced by hydrogen to metallic osmium: [8] [9]

3(NH4)2[OsCl6] → 3Os + 2N2 + 16HCl + 2NH4Cl
(NH4)2[OsCl6] + 2H2 → Os + NH4Cl + 4HCl

Uses

The compound is used as a pharmaceutical, organic, and chemical intermediate. [10]

Related Research Articles

<span class="mw-page-title-main">Europium(III) chloride</span> Chemical compound

Europium(III) chloride is an inorganic compound with the formula EuCl3. The anhydrous compound is a yellow solid. Being hygroscopic it rapidly absorbs water to form a white crystalline hexahydrate, EuCl3·6H2O, which is colourless. The compound is used in research.

<span class="mw-page-title-main">Ammonium hydrosulfide</span> Chemical compound

Ammonium hydrosulfide is the chemical compound with the formula [NH4]SH.

<span class="mw-page-title-main">Terbium(III,IV) oxide</span> Chemical compound

Terbium(III,IV) oxide, occasionally called tetraterbium heptaoxide, has the formula Tb4O7, though some texts refer to it as TbO1.75. There is some debate as to whether it is a discrete compound, or simply one phase in an interstitial oxide system. Tb4O7 is one of the main commercial terbium compounds, and the only such product containing at least some Tb(IV) (terbium in the +4 oxidation state), along with the more stable Tb(III). It is produced by heating the metal oxalate, and it is used in the preparation of other terbium compounds. It is also used in Electronics and Data Storage, Green Energy Technologies, Medical Imaging and Diagnosis, and Chemical Processes. Terbium forms three other major oxides: Tb2O3, TbO2, and Tb6O11.

<span class="mw-page-title-main">Erbium(III) chloride</span> Chemical compound

Erbium(III) chloride is a violet solid with the formula ErCl3. It is used in the preparation of erbium metal.

<span class="mw-page-title-main">Yttrium(III) chloride</span> Chemical compound

Yttrium(III) chloride is an inorganic compound of yttrium and chloride. It exists in two forms, the hydrate (YCl3(H2O)6) and an anhydrous form (YCl3). Both are colourless salts that are highly soluble in water and deliquescent.

<span class="mw-page-title-main">Yttrium(III) bromide</span> Chemical compound

Yttrium(III) bromide is an inorganic compound with the chemical formula YBr3. It is a white solid. Anhydrous yttrium(III) bromide can be produced by reacting yttrium oxide or yttrium(III) bromide hydrate and ammonium bromide. The reaction proceeds via the intermediate (NH4)3YBr6. Another method is to react yttrium carbide (YC2) and elemental bromine. Yttrium(III) bromide can be reduced by yttrium metal to YBr or Y2Br3. It can react with osmium to produce Y4Br4Os.

<span class="mw-page-title-main">Thorium(IV) chloride</span> Chemical compound

Thorium(IV) chloride describes a family of inorganic compounds with the formula ThCl4(H2O)n. Both the anhydrous and tetrahydrate (n = 4) forms are known. They are hygroscopic, water-soluble white salts.

<span class="mw-page-title-main">Ammonium hexachloroplatinate</span> Chemical compound

Ammonium hexachloroplatinate, also known as ammonium chloroplatinate, is the inorganic compound with the formula (NH4)2[PtCl6]. It is a rare example of a soluble platinum(IV) salt that is not hygroscopic. It forms intensely yellow solutions in water. In the presence of 1M NH4Cl, its solubility is only 0.0028 g/100 mL.

Osmium compounds are compounds containing the element osmium (Os). Osmium forms compounds with oxidation states ranging from −2 to +8. The most common oxidation states are +2, +3, +4, and +8. The +8 oxidation state is notable for being the highest attained by any chemical element aside from iridium's +9 and is encountered only in xenon, ruthenium, hassium, iridium, and plutonium. The oxidation states −1 and −2 represented by the two reactive compounds Na
2[Os
4(CO)
13] and Na
2[Os(CO)
4] are used in the synthesis of osmium cluster compounds.

<span class="mw-page-title-main">Potassium hexachloroplatinate</span> Chemical compound

Potassium hexachloroplatinate is the inorganic compound with the formula K2PtCl6. It is a yellow solid that is an example of a comparatively insoluble potassium salt. The salt features the hexachloroplatinate(IV) dianion, which has octahedral coordination geometry.

<span class="mw-page-title-main">Osmium dioxide</span> Chemical compound

Osmium dioxide is an inorganic compound with the formula OsO2. It exists as brown to black crystalline powder, but single crystals are golden and exhibit metallic conductivity. The compound crystallizes in the rutile structural motif, i.e. the connectivity is very similar to that in the mineral rutile.

<span class="mw-page-title-main">Sodium hexachloroplatinate</span> Chemical compound

Sodium hexachloroplatinate(IV), the sodium salt of chloroplatinic acid, is an inorganic compound with the formula Na2[PtCl6], consisting of the sodium cation and the hexachloroplatinate anion. As explained by Cox and Peters, anhydrous sodium hexachloroplatinate, which is yellow, tends to form the orange hexahydrate upon storage in humid air. The latter can be dehydrated upon heating at 110 °C.

<span class="mw-page-title-main">Ammonium hexachloroiridate(IV)</span> Chemical compound

Ammonium hexachloroiridate(IV) is the inorganic compound with the formula (NH4)2[IrCl6]. This dark red solid is the ammonium salt of the iridium(IV) complex [IrCl6]2−. It is a commercially important iridium compound, one of the most common complexes of iridium(IV). A related but ill-defined compound is iridium tetrachloride, which has been used interchangeably.

<span class="mw-page-title-main">Ammonium hexachlorotellurate</span> Chemical compound

Ammonium hexachlorotellurate is an inorganic chemical compound with the chemical formula [NH4]2[TeCl6].

<span class="mw-page-title-main">Sodium hexachloroosmate</span> Chemical compound

Sodium hexachloroosmate is the inorganic compound with the formula Na2OsCl6. A red solid, it is the disodium salt of the osmium(VI) complex [OsCl6]2−. The anion is an octahedral complex with Os-Cl distance of 2.325(3) Å, as established by X-ray crystallography. The compound can be prepared by reaction of a suspension of osmium metal in molten sodium chloride with chlorine:

Ammonium hexachlorostannate is an inorganic chemical compound with the chemical formula (NH4)2SnCl6.

Ammonium hexachloroplumbate is an inorganic chemical compound with the chemical formula (NH4)2PbCl6.

Ammonium hexachloropalladate is an inorganic chemical compound with the chemical formula (NH4)2PdCl6.

Ammonium hexachloroselenate is an inorganic chemical compound with the chemical formula (NH4)2SeCl6.

Ammonium hexachlororhodate(III) is an inorganic chemical compound with the chemical formula (NH4)3RhCl6.

References

  1. ↑ "Ammonium hexachloroosmate(IV)". Sigma Aldrich . Retrieved 17 October 2024.
  2. ↑ "Ammonium Hexachloroosmate". American Elements . Retrieved 17 October 2024.
  3. ↑ Brauer, Georg (2 December 2012). Handbook of Preparative Inorganic Chemistry V2. Elsevier. p. 1603. ISBN   978-0-323-16129-9 . Retrieved 17 October 2024.
  4. ↑ Dwyer, F. P.; Hogarth, J. W.; Rhoda, Richard N. (January 1957). "Ammonium Hexachloroosmate(IV)". Inorganic Syntheses. Inorganic Syntheses. Vol. 5. pp. 206–207. doi:10.1002/9780470132364.ch60. ISBN   978-0-470-13164-0 . Retrieved 17 October 2024.
  5. ↑ Inorganic Syntheses, Volume 5. John Wiley & Sons. 22 September 2009. p. 206. ISBN   978-0-470-13268-5 . Retrieved 17 October 2024.
  6. ↑ Armarego, W. L. F. (27 August 2022). Purification of Laboratory Chemicals: Part 2 Inorganic Chemicals, Catalysts, Biochemicals, Physiologically Active Chemicals, Nanomaterials. Butterworth-Heinemann. p. 7. ISBN   978-0-323-95828-8 . Retrieved 17 October 2024.
  7. ↑ Haynes, William M. (19 April 2016). CRC Handbook of Chemistry and Physics, 94th Edition. CRC Press. p. 4-46. ISBN   978-1-4665-7115-0 . Retrieved 17 October 2024.
  8. ↑ Lay, Peter A.; Magnuson, Roy H.; Taube, Henry; Vassilian, Asbed (January 1986). "Pentaammineosmium(III) and Hexaammineosmium(III) Complexes". Inorganic Syntheses. Vol. 24. pp. 269–277. doi:10.1002/9780470132555.ch73. ISBN   978-0-471-83441-0 . Retrieved 17 October 2024.
  9. ↑ Meyer, Gerd; Möller, Angela (30 June 1991). "Thermolysis of ternary ammonium chlorides of rhenium and the noble metals". Journal of the Less Common Metals . 170 (2): 327–331. doi:10.1016/0022-5088(91)90336-3. ISSN   0022-5088 . Retrieved 17 October 2024.
  10. ↑ "Ammonium hexachloroosmate(IV), 99.9% (metals basis), Os 42.5% min, Thermo Scientific Chemicals". Fisher Scientific . Retrieved 17 October 2024.
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