Sodium zincate

Sodium zincate
Names
	IUPAC name sodium tetrahydroxozincate(II)
Identifiers
CAS Number	12179-14-5 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.032.117
EC Number	235-3 ft42-1;
PubChem CID	166652;
CompTox Dashboard (EPA)	DTXSID70893224 ;
	InChI InChI=1S/2Na.4H2O.Zn/h;;41H2;/q2+1;;;;;+2/p-4;
	SMILES ......;
Properties
Chemical formula	Na2
Molar mass	179.418 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). verify (what is ?) Infobox references

Sodium zincate refers to anionic zinc oxides or hydroxides, depending on conditions. In the applications of these materials, the exact formula is not necessarily important and it is likely that aqueous zincate solutions consist of mixtures.^[1]

Hydroxyzincates

Solutions of sodium zincate may be prepared by dissolving zinc, zinc hydroxide, or zinc oxide in an aqueous solution of sodium hydroxide.^[2] Simplified equations for these complex processes are:

ZnO + H₂O + 2 NaOH → Na₂Zn(OH)₄

Zn + 2 H₂O + 2 NaOH → Na₂Zn(OH)₄ + H₂

From such solutions, one can crystallize salts of containing the anions Zn(OH)₄²⁻, Zn₂(OH)₆²⁻, and Zn(OH)₆⁴⁻. Na₂Zn(OH)₄ consists of tetrahedral zincate ion and octahedral sodium cations.^[3]
The salt Sr₂Zn(OH)₆ features zinc in an octahedral coordination sphere.

Oxozincates

Related oxides are also known such as Na₂ZnO₂,^[4] Na₂Zn₂O₃,^[5] Na₁₀Zn₄O₉.^[6]

References

^ Glenn O. Mallory, Juan B. Hajdu, (1990), Electroless Plating: Fundamentals and Applications, American Electroplaters and Surface Finishers Society, , William Andrew Inc., ISBN 0-936569-07-7
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
^ Synthese und Kristallstruktur von Na₂Zn(OH)₄, R. Stahl , R. Niewa , H. Jacobs, Zeitschrift für anorganische und allgemeine Chemie, volume 625, pp. 48 - 50, doi:10.1002/(SICI)1521-3749(199901)625:1<48::AID-ZAAC48>3.0.CO;2-L
^ D. Trinschek, M. Jansen (1996): "Na₂ZnO2, ein neues Natriumzinkat". Zeitschrift für Naturforschung B, volume 51, issue 5, pages 711-714. doi:10.1515/znb-1996-0515
^ Eine neue Modifikation von Na₂Zn₂O₃, D. Trinschek, M. Jansen: , Z. Naturforschung 51b, (1996), 917-21
^ Ein neues Oxozinkat mit trigonal-planar koordiniertem Zink, D. Trinschek, M. Jansen: Na₁₀Zn₄O₉, Zeitschrift für anorganische und allgemeine Chemie volume 622 (1996), pp. 245-50

[1] Glenn O. Mallory, Juan B. Hajdu, (1990), Electroless Plating: Fundamentals and Applications, American Electroplaters and Surface Finishers Society, , William Andrew Inc., ISBN 0-936569-07-7

[Greenwood1997-2] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

[3] Synthese und Kristallstruktur von Na₂Zn(OH)₄, R. Stahl , R. Niewa , H. Jacobs, Zeitschrift für anorganische und allgemeine Chemie, volume 625, pp. 48 - 50, doi:10.1002/(SICI)1521-3749(199901)625:1<48::AID-ZAAC48>3.0.CO;2-L

[trin1996-4] D. Trinschek, M. Jansen (1996): "Na₂ZnO2, ein neues Natriumzinkat". Zeitschrift für Naturforschung B, volume 51, issue 5, pages 711-714. doi:10.1515/znb-1996-0515

[5] Eine neue Modifikation von Na₂Zn₂O₃, D. Trinschek, M. Jansen: , Z. Naturforschung 51b, (1996), 917-21

[6] Ein neues Oxozinkat mit trigonal-planar koordiniertem Zink, D. Trinschek, M. Jansen: Na₁₀Zn₄O₉, Zeitschrift für anorganische und allgemeine Chemie volume 622 (1996), pp. 245-50

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