Tin(II) hydroxide

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Tin(II) hydroxide
Tin(II) hydroxide.JPG
IUPAC name
Tin(II) hydroxide
Other names
Stannous hydroxide
  • 12026-24-3 Yes check.svgY
3D model (JSmol)
ECHA InfoCard 100.031.542 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 234-710-9
PubChem CID
  • InChI=1S/2H2O.Sn/h2*1H2;/q;;+2/p-2
  • [OH-].[OH-].[Sn+2]
Molar mass 152.73 g/mol
155 J·mol−1·K−1 [1]
−561 kJ·mol−1 [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tin(II) hydroxide, Sn(OH)2, also known as stannous hydroxide, is an inorganic compound tin(II). The only related material for which definitive information is available is the oxy hydroxide Sn6O4(OH)4, but other related materials are claimed. They are all white solids that are insoluble in water.


Preparation and structure

Crystals of Sn6O4(OH)4 has been characterized by X-ray diffraction. This cluster is obtained from solution of basic solutions of tin(II). The compound consists of an octahedron of Sn centers, each face of which is capped by an oxide or a hydroxide. The structure is reminiscent of the Mo6S8 subunit of the Chevrel phases.. [2] The structure of pure Sn(OH)2 is not known. [3]

Sn(OH)2 has been claimed to arise from the reaction of (CH3)3SnOH with SnCl2 in an aprotic solvent: [3]

2 Me3SnOH + SnCl2 → Sn(OH)2 + 2 Me3SnCl

No crystallographic characterization is available on this material.


Stannous hydroxide is easily oxidized to stannic oxide (SnO2) by air.

Related Research Articles

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Tin Chemical element, symbol Sn and atomic number 50

Tin is a chemical element with the symbol Sn and atomic number 50. Tin is a silvery-colored metal that characteristically has a faint yellow hue.

The oxidation state, or oxidation number, is the hypothetical charge of an atom if all of its bonds to different atoms were fully ionic. It describes the degree of oxidation of an atom in a chemical compound. Conceptually, the oxidation state may be positive, negative or zero. While fully ionic bonds are not found in nature, many bonds exhibit strong ionicity, making oxidation state a useful predictor of charge.

In chemistry, an amphoteric compound is a molecule or ion that can react both as an acid and as a base. What exactly this can mean depends on which definitions of acids and bases are being used. The prefix of the word 'amphoteric' is derived from a Greek prefix amphi which means "both".

In chemistry the term stannate refers to compounds of tin (Sn). Stannic acid (Sn(OH)4), the formal precursor to stannates, does not exist and is actually a hydrate of SnO2. The term is also used in naming conventions as a suffix; for example the hexachlorostannate ion is SnCl2−

Organotin chemistry

Organotin compounds or stannanes are chemical compounds based on tin with hydrocarbon substituents. Organotin chemistry is part of the wider field of organometallic chemistry. The first organotin compound was diethyltin diiodide ((C2H5)2SnI2), discovered by Edward Frankland in 1849. The area grew rapidly in the 1900s, especially after the discovery of the Grignard reagents, which are useful for producing Sn-C bonds. The area remains rich with many applications in industry and continuing activity in the research laboratory.

Tin(II) chloride Chemical compound

Tin(II) chloride, also known as stannous chloride, is a white crystalline solid with the formula SnCl2. It forms a stable dihydrate, but aqueous solutions tend to undergo hydrolysis, particularly if hot. SnCl2 is widely used as a reducing agent (in acid solution), and in electrolytic baths for tin-plating. Tin(II) chloride should not be confused with the other chloride of tin; tin(IV) chloride or stannic chloride (SnCl4).

Tin(II) oxide Chemical compound, stannous oxide (SnO)

Tin(II) oxide is a compound with the formula SnO. It is composed of tin and oxygen where tin has the oxidation state of +2. There are two forms, a stable blue-black form and a metastable red form.

Tin(IV) oxide Chemical compound known as stannic oxide, cassiterite and tin ore

Tin(IV) oxide, also known as stannic oxide, is the inorganic compound with the formula SnO2. The mineral form of SnO2 is called cassiterite, and this is the main ore of tin. With many other names, this oxide of tin is an important material in tin chemistry. It is a colourless, diamagnetic, amphoteric solid.

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Tin(II) fluoride, commonly referred to commercially as stannous fluoride (from Latin stannum, 'tin'), is a chemical compound with the formula SnF2. It is a colourless solid used as an ingredient in toothpastes.

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Tin(IV) fluoride Chemical compound

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Cobalt(II) hydroxide Chemical compound

Cobalt(II) hydroxide or cobaltous hydroxide is the inorganic compound with the formula Co(OH)
, consisting of divalent cobalt cations Co2+
and hydroxide anions HO
. The pure compound, often called the "beta form" is a pink solid insoluble in water.

Sodium stannate Chemical compound

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Metals close to the border between metals and nonmetals Category of metallic elements

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  1. 1 2 Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A23. ISBN   978-0-618-94690-7.
  2. R. A. Howie; W. Moser (1968). "Structure of Tin(II) "Hydroxide" and Lead(II) "Hydroxide". Nature. 219 (5152): 372–373. Bibcode:1968Natur.219..372H. doi:10.1038/219372a0. S2CID   45007541.
  3. 1 2 Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.), Inorganic Chemistry, translated by Eagleson, Mary; Brewer, William, San Diego/Berlin: Academic Press/De Gruyter, ISBN   0-12-352651-5