I removed the axial chloride by cyanide it shows significant color change and as well as strong cyanide signal in the IR, however I tried several recrystallization conditions but unable to get the single crystal, my complex has PZPY system and solubility in DMF and Methanol is quite good and partially soluble in other ACN and THF , I tried most of common solvent however, unable to grow the crystal, if anyone has good suggestions or ideas are much appreciated!!
Thanks in advance
Try to dissolve the complex in in hot ACN for 5 mins in a test tube. Then quickly filter it out in another 15 ml test tube. Put this second test tube inside a small Dewar (inside of the Dewar is covered in cotton). And seal the upper portion of the Dewar tightly. Careful that inserted test tube solution should be in hot condition. Now put the Dewar for overnight. See, whether crystal comes out or not.
Thank you very much for your time and suggestion Arunava!! sure, I will try this idea.
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