Identifiers | |
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3D model (
JSmol)
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PubChem
CID
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CompTox Dashboard (
EPA)
|
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Properties | |
H4O4Zn−2 | |
Molar mass | 133.41 g·mol−1 |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
In
chemistry, tetrahydroxozincate or tetrahydroxidozincate
[1] is a
divalent
anion (negative
ion) with formula Zn(OH)2−
4, with a central
zinc atom in the +2 or (II) valence state
coordinated to four
hydroxide groups. It has Sp3 hybridization. It is the most common of the
zincate anions, and is often called just zincate.
These names are also used for the salts containing that anion, such as sodium zincate Na2Zn(OH)4 [2] and calcium zincate CaZn(OH)4·2H2O [3]
Zincate salts can be obtained by reaction of
zinc oxide (ZnO) or
zinc hydroxide (Zn(OH)
2) and a strong
base like
sodium hydroxide.
It is now generally accepted that the resulting solutions contain the tetrahydroxozincate ion.
[4] Earlier
Raman studies had been interpreted as indicating the existence of linear ZnO2−
2 ions.
[5]
The name "zincate" may also refer to a polymeric anion with formula approaching [Zn(OH)−
3n, which forms salts such as NaZn(OH)
3·H
2O,
[6] or to mixed oxides of zinc and less
electronegative elements, such as Na
2ZnO
2.
[7]
Identifiers | |
---|---|
3D model (
JSmol)
|
|
PubChem
CID
|
|
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
H4O4Zn−2 | |
Molar mass | 133.41 g·mol−1 |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
In
chemistry, tetrahydroxozincate or tetrahydroxidozincate
[1] is a
divalent
anion (negative
ion) with formula Zn(OH)2−
4, with a central
zinc atom in the +2 or (II) valence state
coordinated to four
hydroxide groups. It has Sp3 hybridization. It is the most common of the
zincate anions, and is often called just zincate.
These names are also used for the salts containing that anion, such as sodium zincate Na2Zn(OH)4 [2] and calcium zincate CaZn(OH)4·2H2O [3]
Zincate salts can be obtained by reaction of
zinc oxide (ZnO) or
zinc hydroxide (Zn(OH)
2) and a strong
base like
sodium hydroxide.
It is now generally accepted that the resulting solutions contain the tetrahydroxozincate ion.
[4] Earlier
Raman studies had been interpreted as indicating the existence of linear ZnO2−
2 ions.
[5]
The name "zincate" may also refer to a polymeric anion with formula approaching [Zn(OH)−
3n, which forms salts such as NaZn(OH)
3·H
2O,
[6] or to mixed oxides of zinc and less
electronegative elements, such as Na
2ZnO
2.
[7]