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Piperazinediium tetra-chloridocadmate monohydrate.

ABSTRACT: In the title compound, (C(4)H(12)N(2))[CdCl(4)]·H(2)O, the [CdCl(4)](2-) anions adopt a slightly distorted tetra-hedral configuration. In the crystal, O-H⋯Cl hydrogen bonds link the anions and water mol-ecules into corrugated inorganic chains along the b axis which are inter-connected via piperazinediiumN-H⋯O and N-H⋯Cl inter-actions into a three-dimensional framework structure.

SUBMITTER: El Glaoui M

PROVIDER: S-EPMC3051944 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Piperazinediium tetra-chloridozincate(II).

Project description:In the title compound, (C(4)H(12)N(2))[ZnCl(4)], the Zn atom adopts a slightly distorted tetra-hedral geometry. In the crystal, the dication and dianion inter-act by way of N-H⋯Cl and N-H⋯(Cl,Cl) hydrogen bonds to result in a layered network propagating in (010). The hydrogen-bonding network is unbalanced, with three Cl atoms accepting two hydrogen bonds each and one Cl atom not accepting any hydrogen bonds: the latter shows the shortest Zn-Cl bond length. The crystal studied was found to be an inversion twin.

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Project description:A small quantity of the title compound, C(8)H(20)N(2) (2+)·2Br(-), was formed as a by-product in a reaction between a diamine and an alkyl bromide. The asymmetric unit contains half of a centrosymmetric dication and a bromide anion. In the crystal, weak inter-molecular C-H?Br hydrogen bonds consolidate the crystal packing.

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Project description:During the crystallization of the title compound, 4C(3)H(5)N(2) (+)·C(4)H(12)N(2) (+)·2C(9)H(3)O(6) (3-)·2H(2)O, the acidic protons were transferred to the imidazole and piperazine N atoms, forming the final 4:1:2:2 hydrated mixed salt. The mean planes of the three carboxyl-ate groups in the anion are twisted with respect to the the central benzene ring, making dihedral angles of 13.5?(1), 14.5?(1) and 16.9?(1)°. In the crystal, the component ions are linked into a three-dimensional network by a combination of inter-molecular N-H?O, O-H?O and weak C-H?O hydrogen bonds. Further stabilization is provided by ?-? stacking inter-actions with centroid-centroid distances of 3.393?(2)?Å and weak C=O?? inter-actions [O-centroid = 3.363?(2)?Å].

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Project description:In the title salt, (C(8)H(15)N(3))[CdCl(4)], four Cl atoms coordinate the Cd(II) atom in a slightly distorted tetra-hedral geometry. In the crystal, each [CdCl(4)](2-) anion is connected to the 1-cyano-methyl-1,4-diazo-niabicyclo-[2.2.2]octane dications by N-H?Cl hydrogen bonds, forming chains parallel to [001]. C-H?Cl inter-actions also occur.

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Project description:In the title organic-inorganic hybrid salt, (C(11)H(20)N(9))[CdCl(5)]·H(2)O, the crystal structure is stabilized by intermolecular hydrogen bonds between the organic cation, the complex inorganic anion and the uncoordinated water molecule, forming a three-dimensional network.

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Project description:In the crystal structure of the title hydrated salt, 2C(4)H(12)N(+)·C(2)O(4) (2-)·H(2)O, the two independent cations, the anion and the water mol-ecule all lie on special positions of m site symmetry. In both cations, the mirror plane passes through the nitrogen atom and two methyl groups; in the anion, the mirror plane passes through two carbon and two oxygen atoms. The anions and water mol-ecules inter-act by O-H?O hydrogen bonding, forming a chain running along the b axis.

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