I mixed sodium azide with organotin complex(simple complex) and after that the solvent was evaporated by rotary.

After that I was added n-hexane to this oily liquid and in the next part I was evaporated solvent again and added diethylether.

In the flask I saw bubbles!!

What can we say?

Which gas was released from our mixture?

I thought a lot but I can't get any satisfactory result.

At the end I got solid but I want to know the nature of that gas.