Draft:Sodium bis(carbonato)cuprate(II)

Sodium bis(carbonato)cuprate(II)
Names
	Other names Sodium dicarbonatocuprate(II)
Properties
Chemical formula	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). Infobox references

Submission declined on 5 December 2024 by Pygos (talk).

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Declined by Pygos 15 days ago. Last edited by Pygos 15 days ago.

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Submission declined on 5 December 2024 by Pygos (talk).

This submission is not adequately supported by reliable sources. Reliable sources are required so that information can be verified. If you need help with referencing, please see Referencing for beginners and Citing sources.

Declined by Pygos 15 days ago.

Comment: Of all three sources in this article, one is a YouTube video made by, presumably, yourself, and one regards the toxicity of copper compounds in general. Please add more reliable and secondary sources for this article (see WP:SECONDARY). Also, you definitely need to put citations in the preparation section. The first chemical equation is blatantly wrong (how can carbon dioxide and sodium hydroxide be together present in the reaction products?). Pygos (talk) 04:13, 5 December 2024 (UTC)

Comment: Of all three sources in this article, one is a YouTube video made by, presumably, yourself, and one regards the toxicity of copper compounds in general. Please add more reliable and secondary sources for this article (see WP:SECONDARY). Also, you definitely need to put citations in the preparation section. The first chemical equation is blatantly wrong (how can carbon dioxide and sodium hydroxide be together present in the reaction products?). Pygos (talk) 04:13, 5 December 2024 (UTC)

Sodium bis(carbonato)cuprate(II) is a complex compound of copper containing the carbonato ligand, with the 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

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.^{[citation needed]}

${\ce {Cu2(OH)2CO3 + 6NaHCO3 -> 2Na2[Cu(CO3)2] + 2NaOH + H2O + CO2}}$ ${\ce {Cu2(OH)2CO3 + 3Na2CO3 -> 2Na2[Cu(CO3)2] + 2NaOH}}$

The solid complex will slowly crystallize from solution as the trihydrate.

Properties

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

It contains copper (II) and is toxic upon ingestion.^[3] Skin contact should be avoided.

References

^ "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.

[1] "Sodium dicarbonatocuprate(II)". Crystal growing. 2022-03-13. Retrieved 2024-12-02.

[2] Casperoxide (2024-06-08). Synthesis and crystallization of sodium bis(carbonato)cuprate (II), Na2[Cu(CO3)2]*3H2O. Retrieved 2024-12-02 – via YouTube.

[3] "Copper Toxicity - Copper Toxicity". MSD Manual Professional Edition. Retrieved 2024-12-02.

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[2]

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