Copper benzoate: Difference between revisions
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| SMILES = c1ccccc1C(=O)[O-].[Cu+] |
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| InChI = 1/2C7H6O2.Cu/c2*8-7(9)6-4-2-1<br />-3-5-6;/h2*1-5H,(H,8,9);/q;;+2/p-2/f2 |
| InChI = 1/2C7H6O2.Cu/c2*8-7(9)6-4-2-1<br />-3-5-6;/h2*1-5H,(H,8,9);/q;;+2/p-2/f2 |
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C7H5O2.Cu/q2*-1;m |
C7H5O2.Cu/q2*-1;m |
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'''Copper benzoate''' is the [[chemical compound]] with the [[Chemical formula|formula]] Cu(C<sub>6</sub>H<sub>5</sub>CO<sub>2</sub>)<sub>2</sub>. This [[coordination complex]] derived from the cupric ion and the [[conjugate base]] of [[benzoic acid]]. Because copper [[emission spectrum|emits]] blue when heated in a flame, this salt has found some use as a source of blue light in [[fireworks]].<ref>{{cite web |url=http://www.wfvisser.dds.nl/EN/cheminfo_EN.html#copperbenzoate |title=Wouter's Practical Pyrotechnics page |accessdate= |
'''Copper benzoate''' is the [[chemical compound]] with the [[Chemical formula|formula]] Cu(C<sub>6</sub>H<sub>5</sub>CO<sub>2</sub>)<sub>2</sub>. This [[coordination complex]] derived from the cupric ion and the [[conjugate base]] of [[benzoic acid]]. Because copper [[emission spectrum|emits]] blue when heated in a flame, this salt has found some use as a source of blue light in [[fireworks]].<ref>{{cite web |url=http://www.wfvisser.dds.nl/EN/cheminfo_EN.html#copperbenzoate |title=Wouter's Practical Pyrotechnics page |accessdate= |format= |work= }} |
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Revision as of 19:34, 28 February 2008
Copper benzoate is the chemical compound with the formula Cu(C6H5CO2)2. This coordination complex derived from the cupric ion and the conjugate base of benzoic acid. Because copper emits blue when heated in a flame, this salt has found some use as a source of blue light in fireworks.[1]
Preparation
Preparation is easily done by mixing aqueous solutions of sodium benzoate or potassium benzoate and copper sulfate. Solid copper benzoate forms as a bluish-green precipitate and can be collected by filtration. The equations for these reactions are:
- CuSO4 + 2KC6H5CO2 → Cu(C6H5CO2)2 + K2SO4
- CuSO4 + 2NaC6H5CO2 → Cu(C6H5CO2)2 + Na2SO4