I would love to be able to represent a network of reactions in a square like so (pardon the scribbling)
note: I don't care about the squares around the nodes of the reaction, I can live without those.
I've been doing my reactions using
mhchem, and I found this answer showing how to display a network of chemical reactions using
chemfig. However, I need the arrows in the reactions to show the reatcion rates, like in the picture above, and I couldn't find how to do that with chemfig, nor with