Chemical Forums

Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: kohd on October 12, 2004, 03:04:29 PM

Title: recrystallisation of oils?
Post by: kohd on October 12, 2004, 03:04:29 PM

Hi, I've got a metal complex which will not precipitate out as a solid, only as an oil. Similar species (slightly larger ligands) all form solids. Does anyone have any ideas about recrystallisation/solidification of oils? any help would be appreciated as it's driving me nuts!!  :)

Title: Re:recrystallisation of oils?
Post by: movies on October 12, 2004, 03:47:27 PM

Have you tried triturating with a non-polar solvent like ether or hexanes?

Title: Re:recrystallisation of oils?
Post by: kohd on October 14, 2004, 06:36:33 AM

i have tried triturating with dichloromethane, chloroform but had no luck so far! will have a go with ether

Title: Re:recrystallisation of oils?
Post by: movies on October 14, 2004, 03:29:30 PM

In my experience chlorinated solvents don't work very well for precipitating metal complexes.  Ether tends to work very nicely though.

Title: Re:recrystallisation of oils?
Post by: kohd on October 17, 2004, 10:40:33 AM

thanks, i'll give it a try!