Óxido de cobalto(III)

 
Óxido de cobalto(III)
General
Otros nombres Trióxido de dicobalto
Fórmula molecular Co2O3
Identificadores
Número CAS 1308-04-9[1]​
PubChem 4110762
InChI=InChI=1S/2Co.3O
Key: UPWOEMHINGJHOB-UHFFFAOYSA-N
Propiedades físicas
Apariencia Polvo negro
Masa molar 165,8646 g/mol
Punto de fusión 1900 °C (2173 K)
Valores en el SI y en condiciones estándar
(25 ℃ y 1 atm), salvo que se indique lo contrario.
[editar datos en Wikidata]

El óxido de cobalto(III) es un compuesto inorgánico con la fórmula química Co2O3. Aunque sólo dos óxidos de cobalto están bien caracterizados, CoO y Co3O4,[2]​ se han descripto procedimientos que pretenden sintetizar como producto Co2O3. Algunas formulaciones del catalizador hopcalita contienen esta sustancia.

Características

Al igual que el óxido de cobalto(II) (CoO), es antiferromagnético a baja temperatura. [3]​

Preparación

Al calentar el óxido de cobalto (II), (CoO) en presencia de aire a una temperatura que oscila entre los 400 °C y 500 °C, se obtiene el tetraóxido (Co3O4), el cual corresponde a una espinela normal con los iones Co2+ y Co3+, en posiciones tetraédricas y octaédricas, respectivamente pudiendo luego descomponer este óxido a Co2O3.[4]​

Véase también

Referencias

  1. ↑ Número CAS
  2. ↑ Greenwood, Norman N.; Earnshaw, Alan (1981). «Chemistry of the Elements, Segunda edición.». Butterworth-Heinemann. 
  3. ↑ Compuestos antiferromagnéticos. Universidad de Vigo Consultado el 30 de julio de 2014.
  4. ↑ Cotton, A;Wilkinson, G. (1996). “Química inorgánica avanzada”. México: Limusa. Consultado el 30 de julio de 2014

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