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Copper(I) Iodide

Other Names:

Cuprous iodide

General Information:


CAS Number: 7681-65-4

Molecular Weight: 190.45 g/mol

Appearance: White powder

Chemical Formula: CuI

Melting Point: 605 C

Pure copper(I) iodide (CuI) is a white powder. However, samples of copper(I) iodide typically will be tan in color due to the presence of impurities.

Common Uses:

Reagent in Sonogashira couplings

Procedure excerpt:

A mixture of the bromide (0.976 g, 5 mmol), Pd(PPh3)2Cl2 (0.106 g, 0.15 mmol), DIEA (0.646 g, 5 mmol), and CuI (0.095 g, 0.5 mmol) in DMF was purged with nitrogen and . . .

[full procedure]


1) Patent Reference: WO2010016005, page 86, (11.3 MB)

2) Wikipedia: Copper(I) iodide (link)

3) Copper(I) iodide (link)