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A new organically templated open-framework cerium sulfate, {(C4H16N3)[Ce(SO4)3(H2O)]}n, was hydro­thermally synthesized. The CeIII cation is nine-coordinated by nine O atoms, including one water mol­ecule. Two of the SO4 groups afford one monodentate and bidentate linkages as the bridge to connect adjacent CeIII cations, while the third SO4 group attaches the CeIII cation in a bidentate mode. The crystal structure consists of layers composed of eight-membered-ring networks formed by four CeO9 polyhedra and four SO4 tetra­hedra. The triply protonated diethyl­enetriamine cations are located between adjacent layers and connect the layers via hydrogen bonds.

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In the title compound, C11H16N4S, an intra­molecular N—H...N hydrogen bond generates an S(5) ring. In the crystal, inversion dimers linked by pairs of N—H...S bonds occur, generating an R22(8) loop.

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In the title compound, C13H12N2OS, the dihedral angle between the aromatic rings is 14.84 (17)°. In the crystal, inversion dimers linked by pairs of N—H...O hydrogen bonds generate R22(8) loops.

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In the title compound, C11H15N3S, an intra­molecular N—H...N hydrogen bond generates an S(5) ring. In the crystal, inversion dimers linked by pairs of N—H...S bonds occur, generating an R22(8) loop.

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In the title compound, C13H12N2O2S, the dihedral angle between the aromatic rings is 15.20 (11)°. In the crystal, inversion dimers linked by pairs of N—H...O hydrogen bonds generate R22(8) loops.

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The title compound, C10H12N2O2, was prepared by the reaction of methyl carbazate and 4-methyl­benzaldehyde. The dihedral angle between the benzene ring and the carbazate fragment is 20.86 (10)°. In the crystal structure, mol­ecules are linked by inter­molecular N—H...O hydrogen bonds.

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The title compound, C13H9N3OS, was prepared by the reaction of thio­phene-2-carbohydrazide and 4-formyl­benzonitrile. The dihedral angle between the benzene and thio­phene rings is 11.9 (1)°. In the crystal structure, mol­ecules are linked into centrosymmetric dimers by pairs of N—H...O hydrogen bonds.

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In the title salt, C5H14NO+·C2F3O2, the cation and anion are linked by N—H...O and O—H...N hydrogen bonds, generating a three-dimensional network.
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