Crystal structures of 2-meth­oxy­isoindoline-1,3-dione, 1,3-dioxoisoindolin-2-yl methyl carbonate and 1,3-dioxo-2,3-di­hydro-1H-benzo[de]isoquinolin-2-yl methyl carbonate: three anti­convulsant compounds

In three potentially anti­convulsant compounds, of which two are isoindoline derivatives and one an iso­quinoline derivative, the central moiety is planar. In the crystals of all three compounds, there are C—H...O hydrogen bonds present linking the mol­ecules into two-dimensional slabs for the isoindoline derivatives, and into a three-dimensional framework for the iso­quinoline derivative.