Battle of Old Fort Wayne

Silver dichromate is a chemical compound with the formula Ag₂Cr₂O₇. It is insoluble in water and decomposes when treated with hot water. Its anion has a charge of -2.

Synthesis

K₂Cr₂O₇ (aq) + 2 AgNO₃ (aq) --> Ag₂Cr₂O₇ (s) + 2 KNO₃ (aq)

Applications

Related complexes are used as oxidants in organic chemistry.^[1] For instance, tetrakis(pyridine)silver dichromate, [Ag₂(py)₄]²⁺[Cr₂O₇]²⁻, is used to convert benzylic and allylic alcohols to corresponding carbonyl compounds.^[2]

References

^ Firouzabadi, H.; Seddighi, M.; Ahmadi, Z. Arab; Sardarian, A. R. (1989). "Selective Oxidative Cleavage of Benzylic Carbon-Nitrogen Double Bonds Under Non-Aqueous Condition with Tetrakis(pyridine)-Silver Dichromate [(Py)₂Ag]₂Cr₂O₇". Synthetic Communications. 19 (19): 3385. doi:10.1080/00397918908052745.
^ Firouzabadi, H.; Sardarian, A.; Gharibi, H. (1984). "Tetrakis (Pyridine)silver Dichromate Py₄Ag₂Cr₂0₇ - A Mild and Efficient Reagent for the Conversion of Benzylic and Allylic Alcohols to Their Corresponding Carbonyl Compounds". Synthetic Communications. 14: 89–94. doi:10.1080/00397918408060869.

Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

[1] Firouzabadi, H.; Seddighi, M.; Ahmadi, Z. Arab; Sardarian, A. R. (1989). "Selective Oxidative Cleavage of Benzylic Carbon-Nitrogen Double Bonds Under Non-Aqueous Condition with Tetrakis(pyridine)-Silver Dichromate [(Py)₂Ag]₂Cr₂O₇". Synthetic Communications. 19 (19): 3385. doi:10.1080/00397918908052745.

[2] Firouzabadi, H.; Sardarian, A.; Gharibi, H. (1984). "Tetrakis (Pyridine)silver Dichromate Py₄Ag₂Cr₂0₇ - A Mild and Efficient Reagent for the Conversion of Benzylic and Allylic Alcohols to Their Corresponding Carbonyl Compounds". Synthetic Communications. 14: 89–94. doi:10.1080/00397918408060869.

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