Hexamminecobalt(III) Salts

Abstract

Hexamminecobalt(II1) sa.lts may be prepared by any of three methods that depend on oxidation of cobalt(I1) ion * Procedures for preparing most of these salts were originally submitted by Dr. McReynolds, who was impressed by the simplicity of Dr. Bjerrum's method. Shortly after the manuscript for Vol. I1 had been sent to the publisher, similar procedures for three of these salts were submitted by Dr. Bjerrum. Inasmuch as the method was developed by Dr. Bjerrum and war conditions prevented his submitting the procedures a t an earlier date, the editors have taken the liberty of combining the two sets of directions and presenting them as a joint effort of the two men.

Adsorption of methylene blue onto Fe3O4/activated montmorillonite nanocomposite

“…Activated montmorillonite (Huangshan, Baiyue activated montmorillonite Co. Ltd, China), methylene blue (Zhengzhou, Paini Chemical Reagent Co. Ltd, China), 30% ammonia solution, HCl, HNO 3 , NaNO 3 , FeCl 3 ·6H 2 O, FeCl 2 ·4H 2 O, ethanol and all other chemicals were reagent grade and purchased from Sinopharm Chemical Reagent Co. Ltd. Hexaammine cobalt chloride was prepared from ammonium chloride and cobalt chloride hexahydrate (Bjerrum and McReynolds, 1946).…”

Synthesis, Characterization and Study of Effect of Irradiation on Electronic Properties of Polyaniline Composite with Metal Complex of Co (III)

“…The synthesis of dopant hexmaminecobalt(III) chloride was carried out by standard reported method 21 . The method involves the treatment of Co(II) chloride with ammonia and ammonium chloride followed by oxidation with hydrogen peroxide in presence of charcoal as a catalyst.…”

Oxidopolyborate anions templated by transition-metal complex cations: Self-assembled syntheses and structural studies (XRD) of [Co(NH3)6]2[B4O5(OH)4]3·11H2O, [Ni(phen)3][B7O9(OH)5].9.5H2O and [Zn(dac)2(H2O)2][B7O9(OH)5]·H2O

“…Chemicals were obtained from commercial sources. [Co(NH3)6]Cl3 was prepared by a literature method [23]. Fourier transform Infrared spectra (FTIR) were obtained as KBr pellets over the range 450-4000 cm -1 on a Perkin-Elmer 100 FTIR spectrometer.…”