Silicon carbonate
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3D model (
JSmol ) |
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ChemSpider | |
PubChem CID
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Properties | |
CO4Si | |
Molar mass | 104.092 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Silicon carbonate is a crystalline substance formed under pressure from
There was also a claim to have made a silicon carbonate with a cristobalite structure, where both carbon and silicon are surrounded by four oxygen atoms. The substance was made by heating carbon dioxide and silica at 4000K. This has been disputed and the claim was retracted.[3]
Computation also predicts SiC2O6 is stable between 7.2 and 42 GPa. Above 86 GPa the carbonate should convert to CO4 tetrahedra.[4]
Silicon carbonate is potentially important as a mineral in the mantle of the Earth, as both carbon dioxide and silica are common on Earth.
A molecular silicon dicarbonate complex has also been made. This is made from a stabilised silylone (zeroivalent silicon) which reduces some carbon dioxide to carbon monoxide, but then reacts to form a monomeric silicon dicarbonate.[5]