Hexamminecobalt(III) chloride | |
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Names: | hexamminecobalt(III) trichloride cobalt hexammine chloride cobalt hexammine trichloride
|
Formula: | Co(NH3)6Cl3 |
SMILES: | [Cl-].[NH3+][Co-3]([NH3+])([NH3+])([NH3+])([NH3+])[NH3+].[Cl-].[Cl-] |
Molar mass: | 267.477 g/mol |
Density: | 1.71 g/cm3 |
Crystal system: | monoclinic a=12.461 Å, b=21.302 Å, c=12.741 Åα=90°, β=112.968°, γ=90° |
Color: | yellow orange |
Melting point: | 217 °C490.15 K <br />422.6 °F <br />882.27 °R <br /> |
Stability: | stable |
Toxicity: | poisonous |
Description
An unusual example of stable trivalent cobalt. Doesn't form water hydrates.
Precursors
Reaction between cobalt(II) chloride, ammonia, ammonium chloride and hydrogen peroxide
Chemical equation:
100.00
g of hexamminecobalt(III) chloride а 88.95
g of cobalt(II) chloride hexahydrate
, 65.51
g of concentrated
ammonia, 20.00
g of ammonium chloride and 6.36
g of hydrogen peroxide is required.Add to the flask with concentrated ammonia solution hydrogen peroxide and then add small parts of cobalt(II) and ammonium chloride solution with stirring until a precipitation forming will stop. After reaction will stop, filter the solution and use it for crystal growing.
Influence of pH level
Doesn't matter since Co-N bonds are too stable
Storage conditions
Store in its original form or under several layers of varnish at average humidity and room temperature. Do not store in matchboxes or cotton wool and do not heat.
Solubility
Sources
Ammines | |
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Hexamminecobalt(III) chloride ([Co(NH3)6]Cl2) • Hexaamminenickel chloride ([Ni(NH3)6]Cl2) • Tetraamminecopper(II) sulfate ([Cu(NH3)4]SO4) |
Cobalt compounds | |
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Salts |
Cobalt(II) chloride (CoCl2) • Cobalt(II) nitrate (Co(NO3)2) • Cobalt(II) oxalate (CoC2O4) • Cobalt(II) sulfate (CoSO4) • Cobalt(II) tartrate (CoC4H4O6) |
Double salts |
Cerium(III)-cobalt nitrate (3Co(NO3)2 · 2Ce(NO3)3) • Cerium(III)-cobalt-manganese nitrate (3(Co,Mn)(NO3)2 · 2Ce(NO3)3) • Cobalt(II)-ammonium sulfate ((NH4)2Co(SO4)2) • Cobalt(II)-potassium sulfate (K2Co(SO4)2) |
Complexes |
Cyanocobalamin (C63H88CoN14O14P) • Hexamminecobalt(III) chloride ([Co(NH3)6]Cl2) • Hexanitrocobaltates • Hexacyanocobaltates • Trioxalatocobaltates |