[Niko]

I have mixed .5 gr of 1,4 dibromobenzene, fluorene, and o-toluic acid. I have added sodium bicarb, extracted the aqueous layer, protonated and already extracted the o-toluic acid.

 Now I have an organic layer with 1,4 dibromobemzene and fluorene. I cannot figure out how to seperate them?? Any help would be very awesome.

[wildfyr]

Either recrystallize or run a column.

[Niko]

Recrystallize? Can you explain? We have only done recrystallazition once. I need to end up with a pure compound, which im guessing would be the fluorene because its much higher quantity than the p-dibromobenzene.   I am just confused how to recrystallized both compounds that are dissolved in the same solvent

[OrganicDan96]

Recrystallize? Can you explain? We have only done recrystallazition once. I need to end up with a pure compound, which im guessing would be the fluorene because its much higher quantity than the p-dibromobenzene.   I am just confused how to recrystallized both compounds that are dissolved in the same solvent

you would have to evaporate the solvent first to give a solid

[Niko]

I understand how to do  that , but if I evaporate the solvent (diethyl ether)I would be left with p-dibromobenzene and fluorene as solids. Then howbwould I seperate them?

[jeffmoonchop]

If you know the different solubilities of the compounds you can hold the solution at a temperature which is above the saturation temperature of one compound and below the other, then one will be supersaturated and crystallise out and you'll be left with a solution of the other. It may take time for this to occur. This would work unless it forms a cocrystal, which itself will have its own solubility and own difficulties in separating.

[Niko]

Sorry for all the questions. We all just kinda got thrown into this experiment and its worth 100 points.

Ill start researching it, but if anyone can give me a solid plan on what to do that would be rad. Just need to seperate fluorene from 1,4-dibromobenzene both suspended in diethylether.