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Copper sulfides describe a family of chemical compounds and minerals with the formula Cu x S y. Both minerals and synthetic materials comprise these compounds. Some copper sulfides are economically important ores. Prominent copper sulfide minerals include Cu 2 S and CuS .
Chalcocite (/ ˈ k æ l k ə ˌ s aɪ t /), [6] [7] copper(I) sulfide (Cu 2 S), is an important copper ore mineral. It is opaque and dark gray to black, with a metallic luster. It has a hardness of 2.5–3 on the Mohs scale. It is a sulfide with a monoclinic crystal system. The term chalcocite from the Greek khalkos, meaning "copper".
As illustrated by the mineral djurleite, a cuprous sulfide is also known. With the approximate formula Cu 1.96 S, this material is non-stoichiometric (range Cu 1.934 S-Cu 1.965 S) and has a monoclinic structure with 248 copper and 128 sulfur atoms in the unit cell. [7] Cu 2 S and Cu 1.96 S are similar in appearance and hard to distinguish one ...
As with other elements, the simplest compounds of copper are binary compounds, i.e. those containing only two elements, the principal examples being oxides, sulfides, and halides. Both cuprous and cupric oxides are known. Among the numerous copper sulfides, important examples include copper(I) sulfide and copper(II) sulfide. [citation needed]
Copper(II) sulfate is an inorganic compound with the chemical formula Cu SO 4. It forms hydrates CuSO 4 · n H 2 O , where n can range from 1 to 7. The pentahydrate ( n = 5), a bright blue crystal, is the most commonly encountered hydrate of copper(II) sulfate, [ 10 ] while its anhydrous form is white. [ 11 ]
copper(II) sulfide covellite: 1317-40-4 CuSCN: copper(I) thiocyanate: 1111-67-7 CuSO 4: copper(II) sulfate: 7758-98-7 CuSO 4 · 5H 2 O: copper(II) sulfate pentahydrate: 7758-99-8 CuSe: copper(II) selenide: 37359-15-2 CuSeO 3 · 2H 2 O: copper(II) selenite dihydrate: 15168-20-4 CuSeO 4 · 5H 2 O: copper(II) selenate pentahydrate: CuSiO 3: copper ...
Copper(II) oxide or cupric oxide is an inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu 2 O or copper(I) oxide (cuprous oxide). As a mineral, it is known as tenorite, or sometimes black copper.
In organic chemistry, "sulfide" usually refers to the linkage C–S–C, although the term thioether is less ambiguous. For example, the thioether dimethyl sulfide is CH 3 –S–CH 3. Polyphenylene sulfide (see below) has the empirical formula C 6 H 4 S. Occasionally, the term sulfide refers to molecules containing the –SH functional group.