Compound 1 was hydrothermally synthesized under autogenous pressure
I've seen this term used a few times, but with no real explanation of what it means forthcoming. I suspect it refers to the synthesis being performed at equilibrium pressure inside a sealed container (the aforementioned synthesis is performed in an autoclave at 160 C). Is my intuition correct?
 Sun, et al., CrystEngComm, (2012), 14, 3982-3988