metal-organic compounds
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In the title molecular salt, (C3H12N2)[CrO4], each chromate anion accepts six N—HO and C—HO hydrogen bonds from nearby propane-1,2-diammonium cations. Three of the four O atoms of the chromate anion accept these bonds; the remaining Cr—O bond length is notably shorter than the others. In the crystal, the anions and cations stack in layers lying parallel to (100): the hydrogen-bonding pattern leads to a three-dimensional network.
organic compounds
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In the title compound, C9H26N33+·3NO3−, the triprotonated 1,1,4,7,7-pentamethyldiethylenetriamine molecules are linked to the nitrate anions by multiple bifurcated N—H(O,O) and weak C—HO hydrogen bonds. The organic cation is characterized by N—C—C—N torsion angles of −176.2 (2) and 176.6 (2)°.
metal-organic compounds
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In the title hydrated salt, (C5H14N2)2[Bi2Br10]·2H2O, the complete [Bi2Br10]4− bioctahedron is generated by crystallographic inversion symmetry. The diprotonated piperazine ring adopts a chair conformation, with the methyl group occupying an equatorial position. In the crystal, the tetraanions and water molecules are linked by O—HBr and O—H(Br,Br) hydrogen bonds to generate [100] chains. The chains are crosslinked by N—HBr, N—HO and C—HBr hydrogen bonds originating from the piperazinediium dications, thereby forming a three-dimensional network.
metal-organic compounds
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The asymmetric unit of the title salt, (C5H7N2)2[Cr2O7], contains four independent cations and two independent dichromate anions. The crystal structure consists of discrete dichromate anions with an eclipsed conformation stacked in layers parallel to (010) at y = 1/4 and y = 3/4. These layers are linked via 4-aminopyridinium cations by N—HO and weak C—HO hydrogen bonds, forming a three-dimensional supramolecular network. In addition, π–π interactions are present in this structure; the shortest distance separating mean planes through 4-aminopyridinium cations is 3.679 (6) Å.
organic compounds
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In the crystal structure of the title compound, C5H14N22+·2HC2O4−, the two crystallographically independent hydrogen oxalate anions are linked by strong intermolecular O—HO hydrogen bonds, forming two independent corrugated chains parallel to the b axis. These chains are further connected by N—HO and C—HO hydrogen bonds originating from the organic cations, forming a three-dimensional network. The diprotonated piperazine ring adopts a chair conformation, with the methyl group occupying an equatorial position.
organic compounds
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The asymmetric unit of the title salt, C8H14N22+·2NO3−, contains two independent dications and four independent nitrate anions. The crystal structure consists of discrete nitrate ions, three of which stack in layers parallel to (001) at z = 0 and 0.5. These layers are connected via m-xylylenediaminium dications. The fourth anion is sandwiched by the two independent organic cations in the asymmetric unit. In the crystal, the ions are connected by a large number of bifurcated and non-bifurcated N—HO(O) hydrogen bonds, forming sheets parallel to (100). These sheets are connected by C—HO hydrogen bonds, forming a three-dimensional network.
organic compounds
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The asymmetric unit of the title salt [systematic name: 2-(3,4-dihydroxyphenyl)ethanaminium nitrate], C8H12NO2+·NO3−, contains two independent cations and two independent nitrate anions. The crystal structure consists of discrete nitrate ions stacked in layers parallel to (010). These layers are linked via the dopaminium cations by O—HO, N—HO and weak C—HO hydrogen bonds, forming a three-dimensional supramolecular network.
organic compounds
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In the structure of the title salt, C6H16N22+·2NO3−, the cations are connected to the anions through bifurcated N—H(O,O) and weak C—HO hydrogen bonds, generating corrugated layers parallel to the (100) plane. The organic cation is centrosymmetric and the diprotonated piperazine ring adopts a chair conformation, with the methyl groups occupying equatorial positions.