Crystal structure and Hirshfeld surface analysis of ethane-1,2-diaminium 3-[2-(1,3-dioxo-1,3-diphenylpropan-2-ylidene)hydrazinyl]-5-nitro-2-oxidobenzenesulfonate dihydrate

In the anion of the title hydrated salt, C2H10N22+·C21H13N3O8S2?·2H2O, the planes of the phenyl rings and the benzene ring of the 5-nitro-2-oxido­benzene­sulfonate group are inclined to one another by 44.42?(11), 56.87?(11) and 77.70?(12)°. In the crystal, the anions are linked to the cations and the water mol­ecules by N—H...O and O—H...O hydrogen bonds, forming a three-dimensional network. Furthermore, there are face-to-face ?–? stacking inter­actions between the centroids of one phenyl ring and the benzene ring of the 5-nitro-2-oxido­benzene­sulfonate group [centroid–centroid distance = 3.8382?(13)?Å and slippage = 1.841?Å]. A Hirshfeld surface analysis was conducted to verify the contributions of the different inter­molecular inter­actions.