Chemical Properties
yellow crystalline powder
Uses
Catalyst for:
- Oxidation of alkenes
- Hydrogenation of alkynes
Preparation
For cases where large quantities are needed, benzene chromium tricarbonyl is easily prepared from the reaction of benzene with Hexacarbonylchromium.
Solubility in organics
benzene chromium tricarbonyl is soluble in THF, ether, benzene.
Purification Methods
Purify the complex by sublimation in vacuo. A possible impurity is 2-picoline which can be removed by washing with pentane and drying. It is then purified further by sublimation at 80-85o/10-3mm, or by recrystallisation from Et2O to give yellow crystals. 1H NMR in CDCl3 should give a single peak at 4.68. [Rausch J Org Chem 39 1787 1974, Pauson in Houben-Weyl Meth Org Chem V, E 18 Pt I p226 Theme Verlag, Stuttgart 1986, Beilstein 5 IV 625.]
