[auto4590]

I found this, but my instructor said it is incorrect https://images.app.no_way/F53K5LMSaULxotky6. My instructor also said that Sn never forms a bond with N and it is a SET mechanism. I also found this https://onlinelibrary.wiley.com/cms/asset/443ca8bf-f886-4168-a0fb-84a53cedfc2a/poc3543-fig-0008-m.jpg, but it doesn't help me with the mechanism. I came up with a mechanism, but I don't feel confident about it at all. Does anyone know where I can find the correct mechanism? Or at least do you know if the reaction ratio between Sn:nitrobenzene is 3:1?

[Borek]

Your image doesn't show, what you posted is not a correct link.

My bet is that Sn itself doesn't matter much, it just reacts with the acid to produce hydrogen, the reducing agent. I can be wrong though, heavier metals often react to create complexes in which ligands have properties modified enough to facilitate some reactions.