Ihave used many solvents till now I could not succeeded.
1.Ethanol
2. Acetone and Dichloromethane
3. Petroleum ether and Ethylacetate
4.Methanol
5.Choroform and benzene
6. Toulene
Hi Shaima Ibraheem Chyad Al-khazraji, in our hands, acetonitrile was often a good choice when various other solvents failed to give nice crystals. You could try to dissolve your compound in a minimum amount of hot acetonitrile and let the solution slowly cool down to ambient temperature. If your compound is soluble in chloroform, you can also try a diffusion technique. In this case you could place a vial with a chloroform solution of your compound in a larger closed vessel containing pentane. The pentane can then slowly diffuse in and perhaps produce crystals. Good luck.
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