Tris(ethylenediamine)cobalt(III) chloride

Tris(ethylenediamine)cobalt(III) chloride is an inorganic compound with the formula [Co(en)3]Cl3 (where "en" is the abbreviation for ethylenediamine). It is the chloride salt of the coordination complex [Co(en)3]3+. This trication was important in the history of coordination chemistry because of its stability and its stereochemistry. Many different salts have been described. The complex was first described by Alfred Werner who isolated this salt as yellow-gold needle-like crystals.

Tris(ethylenediamine)cobalt(III) chloride
Names
IUPAC name
cobalt tris(ethylenediamine) chloride
Other names
tris(ethylenediamine)cobalt(III) chloride
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/3C2H8N2.3ClH.Co/c3*3-1-2-4;;;;/h3*1-4H2;3*1H;/q;;;;;;+3/p-3
    Key: NFUAZJFARNNNFB-UHFFFAOYSA-K
  • dihydrate:: InChI=1S/3C2H8N2.3ClH.Co.2H2O/c3*3-1-2-4;;;;;;/h3*1-4H2;3*1H;;2*1H2/q;;;;;;+3;;/p-3
    Key: ALLUKJGRPOLBEF-UHFFFAOYSA-K
  • trihydrate:: InChI=1S/3C2H8N2.3ClH.Co.3H2O/c3*3-1-2-4;;;;;;;/h3*1-4H2;3*1H;;3*1H2/q;;;;;;+3;;;/p-3
    Key: WBMVTRUQSMZIKW-UHFFFAOYSA-K
  • C(CN)N.C(CN)N.C(CN)N.[Cl-].[Cl-].[Cl-].[Co+3]
  • dihydrate:: C(CN)N.C(CN)N.C(CN)N.O.O.Cl[Co](Cl)Cl
  • trihydrate:: C(CN)N.C(CN)N.C(CN)N.O.O.O.[Cl-].[Cl-].[Cl-].[Co+3]
Properties
C6H24N6Cl3Co
Molar mass 345.59
Appearance yellow-orange solid
Melting point 275 °C (527 °F; 548 K) (decomposes)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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