Compounds | Reactions | Production
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Bismuth strontium calcium copper oxide Bi2Sr2CanCun+1O2n+6 |
A family of high-temperature superconductors and also the first high-temperature superconductors to be discovered which did not contain a rare earth element. |
Copper(II) arsenate Cu3(AsO4)2.4H2O or Cu5H2(AsO4)4.2H2O |
Is an insecticide used in agriculture, also used as a herbicide, fungicide, and a rodenticide. |
Copper(II) bromide CuBr2 |
It is used in photographic processing as an intensifier and as a brominating agent in organic synthesis. |
It is also used in the copper vapour laser, a class of laser where the medium is copper bromide vapour formed in situ from hydrogen bromide in reaction with the enclosing copper discharge tube. [2] Producing yellow or green light, it is used in dermatological applications. |
Verdigris Cu(CH3COO)2 |
It commonly occurs by the action of acetic acid when copper, brass or bronze is weathered and exposed to air or seawater over a period of time. Its name comes from the Middle English vertegrez, from the Old French verte grez, an alteration of vert-de-Grice - verd (green), de (of), and Grice (Greece)- "green of Greece". |
The vivid green colour of verdigris makes it a very common pigment. Until the 19th century, verdigris was the most vibrant green pigment available and frequently used in painting. Verdigris is lightfast in oil paint, as numerous examples of 15th century paintings show. However, its lightfastness and air resistance is very low in other media. Copper resinate, made from verdigris, is not lightfast, even in oil paint. In the presence of light and air, green copper resinate becomes stable brown copper oxide. |
Yttrium barium copper oxide |