Preparation and IR Spectral Analysis of oxovanadium acetylacetone and its pyridine adduct (24 Oct 2007)

Preparation and IR Spectral Analysis of oxovanadium acetylacetone and its pyridine adduct (24 Oct 2007)

Preparation of VO(acac)2

Starting material:
- 5ml deionised water
- 5mml concentrated Sulfuric acid
- 18ml ethanol
- 2g of vanadium pentoxide (V2O5)


Reflux


Reflux for an hour while swirling the contents in the RBF every 10-15minutes


Filter using cotton wool

After adding 6ml of acetylaceton dropwise to the filtrate, the mixture is neutralised with 20g of sodium carbonate in 120ml water.


The mixture is then cooled in ice bath.


It is then filtered using suction pump.

The product of VO(acac)2 is obtained.

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Preparation of VO(acac)2py


0.5g of VO(acac)2 is dissolved in 20ml of toluene and reflux vigorously with 2ml pyridine for 45min


The product is being dried by using the rotary evaportor




The product

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Preparation of the sample for recording the infra-red spectrum


A small portion is being grinded with an agate mortar and pestle with Nujol added.


The Nujol mull is being spreaded on the sodium chloride disc and inserted into its holder.


The infra-red

See also: Preparation and IR Spectral Analysis of oxovanadium acetylacetone and its pyridine adduct (24 Oct 2007)