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[12] [13] Copper(II) chloride reacts with several metals to produce copper metal or copper(I) chloride (CuCl) with oxidation of the other metal. To convert copper(II) chloride to copper(I) chloride, it can be convenient to reduce an aqueous solution with sulfur dioxide as the reductant: [8] 2 CuCl 2 + SO 2 + 2 H 2 O → 2 CuCl + 2 HCl + H 2 SO 4
Dicopper chloride trihydroxide is the compound with chemical formula Cu 2 (O H) 3 Cl. It is often referred to as tribasic copper chloride (TBCC), copper trihydroxyl chloride or copper hydroxychloride. This greenish substance is encountered as the minerals atacamite, paratacamite, and botallackite. [4]
The main use of copper(I) chloride is as a precursor to the fungicide copper oxychloride. For this purpose aqueous copper(I) chloride is generated by comproportionation and then air-oxidized: [12] Cu + CuCl 2 → 2 CuCl 4 CuCl + O 2 + 2 H 2 O → Cu 3 Cl 2 (OH) 4 + CuCl 2. Copper(I) chloride catalyzes a variety of organic reactions, as
The copper in the preparation is in the form of a soluble complex with ammonia NH 3 or an amine such as ethanolamine N(C 2 H 5)H 2.In any case, the copper content is usually expressed as a weight percentage of the amount of copper oxide CuO that would account for the copper present.
Copper is a chemical element with the symbol Cu (from Latin: cuprum) and the atomic number of 29. It is easily recognisable, due to its distinct red-orange color.Copper also has a range of different organic and inorganic salts, having varying oxidation states ranging from (0,I) to (III).
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Copper cyanide is a coordination polymer.It exists in two polymorphs both of which contain -[Cu-CN]- chains made from linear copper(I) centres linked by cyanide bridges.In the high-temperature polymorph, HT-CuCN, which is isostructural with AgCN, the linear chains pack on a hexagonal lattice and adjacent chains are off set by +/- 1/3 c, Figure 1. [5]
The compound can be obtained by evaporation of a solution of potassium chloride KCl and copper(II) chloride CuCl 2 in 1:1 mole ratio. [3] The anhydrous form is garnet-red. [6] It can be crystallized from a molten mixture of potassium chloride KCl and copper(II) chloride CuCl 2. [7] [2] or by evaporation from a solution of the salts in ethanol. [5]