I did this experiment multiple times and it worked perfectly to the point of letting the cyclohexane evaporate. When the cyclohexane had evaporated there was no iodine left. No iodine crystals had fromed. I tried to cool the solution down so the iodine would not evaporate as fast as the cyclohexan did but still no crystals were formed.
Has someone an idea to stop the iodine from evaporating?