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Topic: recrystallisation of oils?  (Read 8998 times)

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kohd

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recrystallisation of oils?
« 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!!  :)
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Re:recrystallisation of oils?
« Reply #1 on: October 12, 2004, 03:47:27 PM »
Have you tried triturating with a non-polar solvent like ether or hexanes?
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kohd

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Re:recrystallisation of oils?
« Reply #2 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
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Re:recrystallisation of oils?
« Reply #3 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.
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kohd

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Re:recrystallisation of oils?
« Reply #4 on: October 17, 2004, 10:40:33 AM »
thanks, i'll give it a try!
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