Copper carbonate CuCO

Copper oxide (CuO), basic copper carbonate - CuCO 3 C u(OH) 2, and copper sulfate - available commercially as CuS0 5H2O - are... 

Basic Copper Carbonates CuCOs-Cu(OH) (Green Cupric Carbonate)... 

In seawater, the major chemical species of copper are Cu(OH)Cl and Cu(OH)2 and these account for about 65% of the total copper in seawater. The levels of copper hydroxide (Cu(OH)2) increase from about 18% of the total copper at pH 7.0 to 90% at pH 8.6 copper carbonate (CuCOs) dropped from 30% at pH 7.0 to less than 0.1% at pH 8.6. The dominant copper species in seawater over the entire ambient pH range are copper hydroxide, copper carbonate, and cupric ion. Bioavailability and toxicity of copper in marine ecosystems are promoted by oxine and other lipid-soluble synthetic organic chelators. 

Copper Carbonate CuCOs. Material frequently used as a poison in antifouling paints. 

In ordinary atmospheric exposure, copper forms a layer of copper carbonate (CuCOs), a green substance referred to as patina, that protects the metal imdemeath from further corrosiom Likewise, silverware that comes into contact with foodstuffs develops a layer of silver srrllide (Ag2S). 

Copper(ll) acetate is prepared by treatment of copper(II) oxide, CuO, or copper(ll) carbonate, CuCOs, with acetic acid, followed by crystaUization ... 

Formula CuCOs Cu(OH)2 MW 221.12 Synonyms copper carbonate hydroxide green Bremen blue mineral green. 

Neutral copper(ll) chromate may be prepared by treating copper(ll) carbonate, CuCOs, with aqueous solutions of sodium chromate, Na2Cr04 and chromium(VI) oxide, CrOs. 

Copper(I) carbonate (Cu + CO Cu Oj) is known as cuprous carbonate since coppers ion is +1 copper(II) carbonate (Cu + CO — CuCO ) is known as cupric carbonate, which is also known as the green copper mineral malachite, used in pigments, as an insecticide, as a cosmetic astringent, and as a plant fungicide to prevent smut. 

This example illustrates the problems of interpreting photoemission spectra, since the location of CO on Cu(100) is found to be on a top-site by LEED, while Xa-SW calculations either favor a 4-fold hollow site or are inconclusive. Yu/130/ has carried out calculations for CuCO and Cu5CO clusters with CO bonded to the Cu surface through the carbon atom. In CuCO the CO molecule was put directly on top of a Cu atom and in Cu5CO it was located in the four-fold coordinated hollow site, simulating CO adsorbed perpendicular to the (100) surface. The calculated valence density of states for the four-fold adsorption site gives a satisfactory interpretation of the two main peaks observed below the copper d-band in the UV photoemission spectrum (UPS)./131/ An observed weak third peak can be correlated with a minority of CO molecules adsorbed directly on top of a copper atom. 

Many of the minerals in the Earth s crust are not simple ionic compounds consisting of one type of cation such as Cu and one type of anion such as carbonate, COs ". These more complex compounds can be classified as double (or triple or quadruple) salts. (These salts are also referred to as ternary or quaternary.) That is, they contain more than one type of cation and/or more than one type of anion. For example, one of the conunon ores of copper is malachite, which has the formula Cu2C03(0H)2. This is an ionic compound that contains the Cu " ion and both the carbonate and hydroxide anions. Double salts can be thought of as combinations (but not mixtmes) of two or more simple salts. Malachite can be visualized as CuCOs -1- Cu(OH)2. Malachite is frequently found with azurite, which has the formula Cu3(C03)2(0H)2. Azurite simply has a different ratio of the two simple salts 2 CuCOs + Cu(OH)2. 

---