Lead carbonate
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| Template:Longitem | Template:Chem2 |
| Molar mass | 267.21 g/mol |
| Appearance | White powder |
| Density | 6.582 g/cm3 |
| Melting point | Template:Chembox CalcTemperatures |
| Template:Longitem | 1.46·10−13 |
| Solubility | insoluble in alcohol, ammonia; soluble in acid, alkali |
| Template:Longitem | −61.2·10−6 cm3/mol |
| Template:Longitem | 1.804[1] |
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Lead(II) carbonate is the chemical compound with the chemical formula Template:Chem2. It is a white, toxic solid.[2] It occurs naturally as the mineral cerussite.[3]
Structure
Like all metal carbonates, lead(II) carbonate adopts a dense, highly crosslinked structure consisting of intact Template:Chem2 and metal cation sites. As verified by X-ray crystallography, the Pb(II) centers are seven-coordinate, being surrounded by multiple carbonate ligands. The carbonate centers are bonded bidentate to a single Pb and bridge to five other Pb sites.[4]
Production and use
Lead carbonate is manufactured by passing carbon dioxide into a cold dilute solution of lead(II) acetate, or by shaking a suspension of a lead salt more soluble than the carbonate with ammonium carbonate at a low temperature to avoid formation of basic lead carbonate.[2]
Lead carbonate is used as a catalyst to polymerize formaldehyde to poly(oxymethylene). It improves the bonding of chloroprene to wire.[2]
Regulations
The supply and use of this compound is restricted in Europe.[5]
Other lead carbonates
A number of lead carbonates are known:
- White lead, a basic lead carbonate, Template:Chem2
- Shannonite, Template:Chem2
- Plumbonacrite, Template:Chem2[6]
- Template:Chem2
- Abellaite, Template:Chem2
- Leadhillite, Template:Chem2
References
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- ↑ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, Template:ISBN
- ↑ a b c Template:Ullmann
- ↑ Inorganic Chemistry, Egon Wiberg, Arnold Frederick Holleman Elsevier 2001 Template:ISBN
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- ↑ S.V. Krivovichev and P.C. Burns, "Crystal chemistry of basic lead carbonates. II. Crystal structure of synthetic 'plumbonacrite'." Mineralogical Magazine, 64(6), pp. 1069-1075, December 2000. Script error: No such module "citation/CS1".
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