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The trihydrate salt is obtained as a reddish-brown precipitate by adding two equivalents of potassium cyanide to a cobalt salt solution: [3]. CoCl 2 (H 2 O) 6 + 2 KCN → Co(CN) 2 + 2 KCl + 6 H 2 O
These structures cause zinc to have two bonding d-orbitals and three low-lying non-bonding d-orbitals (see non-bonding orbital), which are available for binding. When zinc lacks electron donating ligands it is unable to obtain coordination saturation, which is a consequence of the large atomic radius and low electron deficiency of zinc.
Zinc borate refers to a family of inorganic compounds consisting of borate of zinc. They are white solids with the formulas 4ZnO·B 2 O 3 ·H 2 O, ZnO·B 2 O 3 ·1.12H 2 O, ZnO·B 2 O 3 ·∼2H 2 O, 6ZnO·5B 2 O 3 ·3H 2 O, 2ZnO·3B 2 O 3 ·7H 2 O, 2ZnO·3B 2 O 3 ·3H 2 O, 3ZnO·5B 2 O 3 ·14H 2 O, and ZnO·5B 2 O 3 ·4.5H 2 O.
For commercial applications, some effort is made to avoid halide impurities by using acetate salts of zinc: [5] [6] Zn(CH 3 COO) 2 + HCN → Zn(CN) 2 + 2 CH 3 COOH. Zinc cyanide is also produced as a byproduct of certain gold extraction methods. Procedures to isolate gold from aqueous gold cyanide sometimes call for the addition of zinc:
Zinc compounds are chemical compounds containing the element zinc which is a member of the group 12 of the periodic table. The oxidation state of zinc in most compounds is the group oxidation state of +2. Zinc may be classified as a post-transition main group element with zinc(II). Zinc compounds are noteworthy for their nondescript appearance ...
Horsehead Holding Corporation, formerly The New Jersey Zinc Company, was an American producer of zinc and related materials based in Pittsburgh. The operations of the historic company are currently conducted as American Zinc Recycling. The New Jersey Zinc Company was for many years the largest producer of zinc and zinc products in the United ...
Zinc bromide – ZnBr 2 [201] C. Cd. Cadmium arsenide – Cd 3 As 2; Cadmium bromide – CdBr 2; Cadmium chloride – CdCl 2; Cadmium fluoride – CdF 2; Cadmium ...
Zinc–copper couple is an alloy of zinc and copper that is employed as a reagent in organic synthesis.The “couple” was popularized after the report by Simmons and Smith, published in 1959, on its application as an activated source of zinc required for formation of an organozinc reagent in the Simmons–Smith cyclopropanation of alkenes. [1]