Pyrosilicate

Pyrosilicate anion
Names
IUPAC name
Pyrosilicate
Other names
disilicate, diorthosilicate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
326578
  • InChI=1S/O7Si2/c1-8(2,3)7-9(4,5)6/q-6 checkY
    Key: KUDCBYUNCUYIDU-UHFFFAOYSA-N checkY
  • [O-][Si]([O-])([O-])O[Si]([O-])([O-])[O-]
Properties
O7Si2−6
Molar mass 168.166 g·mol−1
Conjugate acid Pyrosilicic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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A pyrosilicate is a type of chemical compound; either an ionic compound that contains the pyrosilicate anion Si
2O6−
7, or an organic compound with the hexavalent ≡O
3Si-O-SiO
3≡ group. The anion is also called disilicate[1] or diorthosilicate.

Ionic pyrosilicates can be considered salts of the unstable pyrosilicic acid, H
6Si
2O
7. Unlike the acid, the salts can be stable. Indeed, pyrosilicates occur widely in nature as a class of silicate minerals, specifically the sorosilicates.

Some notable synthetic pyrosilicates include

  1. ^ "Disilicate". Chemspider website, CSID:5257009, Accessed 2018-05-26
  2. ^ Abhishek Panigrahi, Shin-ichi Nishimura, Tatau Shimada, Eriko Watanabe, Wenwen Zhao, Gosuke Oyama, and Atsuo Yamada (2017): "Sodium Iron(II) Pyrosilicate Na
    2    Fe
    2    Si
    2    O
    7    : A Potential Cathode Material in the Na
    2    O    -FeO-SiO
    2     System". Chemistry of Materials, volume 29, issue 10, pages 4361–4366. doi:10.1021/acs.chemmater.7b00764
  3. ^ Viktor Renman, Mario Valvo, Cheuk-Wai Tai, and Cesar Pay Gómez (2017): "Manganese Pyrosilicates as Novel Positive Electrode Materials for Na-Ion Batteries". Uppsala University Publications, DIVA urn:nbn:se:uu:diva-334063
  4. ^ Viktor Renman (2017): "Structural and Electrochemical Relations in Electrode Materials for Rechargeable Batteries", Doctoral Thesis, Uppsala University, Department of Chemistry. ORCID: 0000-0001-8739-4054