Hexamminecobalt(III) chloride
From Crystal growing
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 12.4610 Å , b=21.302 Å1.2461 nm 21.3020 Å , c=12.741 Å2.1302 nm 12.7410 Å α=90°1.2741 nm 90° , β=112.968°112°58′4.8″ , γ=90°90° |
Color: | yellow orange |
Melting point: | 217 °C 490.15 K 422.6 °F 882.27 °R |
Stability: | stable |
Toxicity: | poisonous |
Contents
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:
For preparation of
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.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.Influence of pH level
Doesn't matter since Co-N bonds are too stableStorage 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
Temperature | гр/100,00 гр water |
---|---|
20°C 293.15 K 68 °F 527.67 °R | 6.95 |
50°C 323.15 K 122 °F 581.67 °R | 12.04 |
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 |