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The title compound, C21H21N3O3, is a neutral potentially tridentate ligand in an enamine-keto form, stabilized by an intra­molecular N—H...O hydrogen bond. There are two mol­ecules in the asymmetric unit.

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The AgI atom in the title compound, [Ag(C5H6N2)2]2(C8H4O4)·10H2O, shows linear coordination. The cation and centrosymmetric anion inter­act indirectly via the non-coordinated water mol­ecules, to furnish a tightly held three-dimensional structure.

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The mol­ecule of the title compound, C6H14N4O4, possesses a crystallographically imposed centre of symmetry. In the crystal packing, the mol­ecules are linked via weak inter­molecular C—H...O hydrogen bonds into a sheet-like structure parallel to the (10\overline{2}) plane.
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