Draft:Sodium bis(carbonato)cuprate(II)
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cuprate(II)_crystals_microscope.jpg)
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| Names | |
|---|---|
| Other names
Sodium dicarbonatocuprate(II)
| |
| Properties | |
| Na2[Cu(CO3)2] | |
| Molar mass | 229.542 g mol-1 (anhydrous) 283.587 g/mol-1 (trihydrate) |
| Appearance | bright blue solid |
| Density | 2.984 g/cm3 (anhydrous) 2.27 g/cm3 (trihydrate) |
| Melting point | decomposes |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards
|
toxic |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium bis(carbonato)cuprate(II) is a complex compound of copper with chemical formula Na2[Cu(CO3)2][1]. Its trihydrate is a bright blue solid that occurs naturally as the relatively rare minerals chalconatronite and juangodoyite.
Preparation
[edit]Sodium bis(carbonato)cuprate(II) can be prepared by mixing basic copper carbonate with saturated solutions of sodium bicarbonate or carbonate in water under heating.
![{\displaystyle {\ce {Cu2(OH)2CO3 + 6NaHCO3 -> 2Na2[Cu(CO3)2] + 2NaOH + H2O + CO2}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/442d7a2a3cbde5b913c676344b024133b23a2db2)
![{\displaystyle {\ce {Cu2(OH)2CO3 + 3Na2CO3 -> 2Na2[Cu(CO3)2] + 2NaOH}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/759621a53497b65b4a607703cc62c4dbc82aa4f8)
The solid complex will slowly crystallize from solution as the trihydrate.
Properties
[edit]Sodium bis(carbonato)cuprate(II) is somewhat stable in saturated sodium bicarbonate or carbonate solutions. It rapidly decomposes in pure water, with visible changes in less than a minute.[2]
Like all other copper (II) compounds, sodium bis(carbonato)cuprate(II) is paramagnetic due to the unpaired electron in its 3d orbital.
Toxicity
[edit]It contains copper (II) and is toxic upon ingestion.[3] Skin contact should be avoided.
References
[edit]- ^ "Sodium dicarbonatocuprate(II)". Crystal growing. 2022-03-13. Retrieved 2024-12-02.
- ^ Casperoxide (2024-06-08). Synthesis and crystallization of sodium bis(carbonato)cuprate (II), Na2[Cu(CO3)2]*3H2O. Retrieved 2024-12-02 – via YouTube.
- ^ "Copper Toxicity - Copper Toxicity". MSD Manual Professional Edition. Retrieved 2024-12-02.