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In the crystal structure of the title compound, (C12H9N2)2[ZnCl4]·H2O, the two independent 1,10-phenanthrolinium cations are bridged by the water mol­ecule and the tetrahedral tetrachloridozincate anion via N—H...O, O—H...Cl and N—H...Cl hydrogen bonds, forming chains along [100]. The chains are linked via C—H...Cl hydrogen bonds and a number of π–π inter­actions [centroid–centroid distances vary from 3.5594 (14) to 3.7057 (13) Å], forming a three-dimensional network. In each 1,10-phenanthrolinium cation, there is a short N—H...N inter­action.

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The title compounds, (I) and (II), are di­spiro-indole-pyrrolidine-benzo­thio­phene derivatives, with (II) having a chlorine substituent on the oxo­indole unit. As a result, the conformation of the two mol­ecules differs in the angle of inclination of the indole moiety with respect to the benzo­thio­phene ring system, with a dihedral angle of 71.59 (5) in (I) and 82.27 (7)° in (II).

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In the title compound, C18H15N3O3, the dihedral angle between the mean planes of the quinoline and indole ring systems [r.m.s. deviations = 0.189 (2) and 0.027 (2) Å, respectively] is 88.65 (5)°. The cyclo­hexene ring of the quinoline ring system adopts an envelope conformation with the central –CH2– C atom as the flap. In the crystal, mol­ecules are linked by two pairs of N—H...O hydrogen bonds, forming inversion dimers, and enclosing R22(14) ring motifs. This arrangement results in the formation of chains propagating along [100].

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In the title compound, C20H18ClN3O3, the five- and six-membered heterocycles fused through a spiro C atom are inclined to each other at an angle of 87.4 (1)°. In the tricyclic ring system, the cyclo­hexene ring adopts an envelope conformation with the spiro atom as the flap. In the crystal, two sets of N—H...O hydrogen bonds link the mol­ecules into columns containing centrosymmetric R22(7) ring motifs and propagating along the b-axis direction.

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The title compound, {[Zn(C3H3N2)(C3H4N2)2]NO3}n, is a one-dimensional coordination polymer along [01-1] with the ZnII atom coordinating to four imidazole/imidazolide rings. The ZnII atom has a regular tetra­hedral geometry with the planes of the two monodentate imidazole rings inclined to one another by 87.94 (17)°, while the planes of the bridging imidazolide rings are inclined to one another by 39.06 (17)°. In the crystal, the chains are linked via bifurcated N—H...(O,O) hydrogen bonds, forming sheets parallel to (001). These two-dimensional networks are linked via C—H...O hydrogen bonds and a C—H...π inter­action, forming a three-dimensional structure.

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In the title compound, (C9H8N)2[ZnCl4]·2H2O, the tetra­chlorido­zincate ion is located on a twofold rotation axis with the Zn atom on a special position. The crystal packing is stabilized by N—H...O and O—H...Cl inter­actions.

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In the title compound, C35H31NO5, the piperidine ring has an envelope conformation, with the phenyl-substituted C atom adjacent to the methyl­ene C atom as the flap. This flap atom deviates by 0.633 (2) Å from the mean plane of the other five essentially coplanar atoms in the ring (r.m.s. deviation = 0.044 Å). Intra­molecular C—H...O hydrogen bonds form S(7) and S(9) ring motifs. In the crystal, mol­ecules are linked by pairs of C—H...O hydrogen bonds, forming inversion dimers with R22(16) loops.
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