Thank you all for the responses. I am aware of the dangers. I will make sure I won't heat the solid substance.

I heated the solution till it is concentrated and then left to cool. I have attached the picture. It is hard solid disk there. I will try again with slow cooling.

Not the safest compound to work with.

What you got is probably a solid mixture of non-stoichiometric hydrates, some compounds can solidify this way instead of producing nice crystals. Check if slowing down the cooling process won't help, or if adding a crystal to the saturated solution (so called inoculation) won't start the crystallization.

And google for "growing crystals", there are some general guidelines that should help.

If you have a thermometer, try putting the thermometer in water and then adding the ammonium nitrate.  Record the initial temp and then see how it changes.  If your ammonium nitrate is good, the temp should go down.  Then you are good to go.  Try and keep the amount of water relatively small.

Many try and purify ammonium nitrate for other purposes.  Can't help you there.

I ran across this reaction in my homework and while I don’t have any specific homework questions, I just generally want to ask about the feasibility of this reaction and other products (for use in a different context).

Main questions:
Is it possible that this forms a five-membered ring? If so is it more likely to form than what the problem shows?
Is this something that was purely made up for homework or is a realistic intramolecular reaction?

I think I also generally had a question about if there was a good way to convert structures to IUPAC names but that’s more of a secondary question to this one.

Thank you to those who reply and satisfying my curiosity!

so i have question about numbering fused ring why did we start with A on intersecting wall instead of B. Wouldnt it be more accurate to start lettering from the Nitrogen at the top