Dear colleagues,
I have synthesized anthrone for an experiment, and according to the expected reaction, it should appear yellow. However, the resulting solution is a dark brown color (see attached image). The synthesis was carried out under standard conditions, but I am unsure what might have caused this deviation. Could this be due to impurities, incorrect pH, oxidation, or another factor? I would appreciate any insights or suggestions on troubleshooting this issue or verifying the compound's identity.
Thank you!
Initially, the solution was olive green, but over time, it changed to a dark brown color
Mohammad Hosein Shamshiri
Synthesis under standard conditions is silent about many things. There are many methods of synthesis. It is not written how you purified the sample, in what solvent you recorded the spectrum. There is no comparison with the NIST standard.