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4-(2-Azaniumyl-eth-yl)piperazin-1-ium bis(perchlorate).

ABSTRACT: In the title compound, C(6)H(17)N(3) (2+)·2ClO(4) (-), the piperazine ring adopts a chair conformation with the ethyl-ammonium fragment occupying an equatorial position. In the crystal, the dications and perchlorate anions are linked through N-H⋯O hydrogen bonding and weak C-H⋯O hydrogen bonding into a three-dimensional supra-molecular network.

SUBMITTER: Reisi MR

PROVIDER: S-EPMC3200960 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1,4-Bis(4-pyridylmeth-yl)piperazin-1-ium perchlorate fumaric acid hemisolvate.

Project description:In the title salt, C(16)H(21)N(4) (+)·ClO(4) (-)·0.5C(4)H(4)O(4), fumaric acid mol-ecules, situated across crystallographic inversion centres, are O-H?N hydrogen bonded to two protonated 1,4-bis-(4-pyridylmeth-yl)piperazine cations, forming trimolecular units. These construct one-dimensional supra-molecular ribbons by N-H?N hydrogen bonding, and further aggregate via ?-? inter-actions [shortest C?C contact = 3.640?(1)?Å] and perchlorate-mediated C-H?O inter-actions.

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2-[2-(1H-Imidazol-3-ium-5-yl)eth-yl]-3-(pyridin-2-yl)-2H-imidazo[1,5-a]pyridin-4-ium bis-(perchlorate).

Project description:In the title mol-ecular salt, C(17)H(17)N(5) (+)·2ClO(4) (-), the dihedral angles between the fused-ring system and the pendant five- and six-membered heterocyclic rings are 6.4 (2) and 41.29 (19)°, respectively. The O atoms of both perchlorate anions are disordered over two sets of sites with occupancy ratios of 0.614 (8):0.386 (8) and 0.591 (7):0.409 (7). An intra-molecular C-H⋯N contact occurs in the cation. In the crystal, the components are linked by N-H⋯O and C-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid separation = 3.642 (3) Å].

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(±)-2-Methyl-piperazin-1-ium perchlorate.

Project description:In the title compound, C(5)H(13)N(2) (+)·ClO(4) (-), the monoprotonated piperazine ring adopts a chair conformation. In the crystal structure, cations and anions are linked by inter-molecular N-H?O and N-H?N hydrogen bonds into layers parallel to (01).

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Bis[2-(2-pyridyl-sulfan-yl)eth-yl]ammonium perchlorate.

Project description:The cation and anion of the title salt, C(14)H(18)N(3)S(2) (+)·ClO(4) (-), lie on a twofold rotation axis. The cation is a W-shaped entity with the aromatic rings at the ends; the ammonium NH(2) (+) group is a hydrogen-bond donor to the pyridyl N atoms. The perchlorate ion has one O atom disordered over two sites in a 0.50:0.50 ratio.

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Dichlorido(2-{[2-(piperazin-4-ium-1-yl)eth-yl]imino-meth-yl}phenolate)cadmium(II).

Project description:In the title compound, [CdCl(2)(C(13)H(19)N(3)O)], the Cd(II) ion is penta-coordinated with the N,N,O-tridentate Schiff base 2-{[2-(piperazin-4-ium-1-yl)eth-yl]imino-meth-yl}phenolate ligand and two Cl atoms in a highly distorted square-pyramidal geometry; the piperazine ring adopts a chair conformation. In the crystal structure, adjacent mol-ecules are linked together via N-H⋯O and N-H⋯Cl hydrogen bonds, forming infinite layers parallel to the ab plane. The layers are further connected through C-H⋯Cl inter-actions into a three-dimensional network.

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2-{[2-(Piperazin-4-ium-1-yl)ethyl-iminio]meth-yl}phenolate 0.06-chloride 0.94-perchlorate.

Project description:The structure of the title salt, C(13)H(20)N(3)O(+)·0.94ClO(4) (-)·0.06Cl(-), contains a zwitterionic Schiff base with a net positive charge and a perchlorate anion having substitutional disorder with Cl. In the cation, the azomethine N atom is protonated and donates hydrogen bonds to the phenolate O atom and to the tertiary N atom of the piperazine ring. In the crystal, two Schiff base mol-ecules are linked about a center of inversion by a pair of N-H⋯O hydrogen bonds. The resulting dimers are N-H⋯O and C-H⋯O hydrogen bonded to the perchlorate anions, forming a three-dimensional structure. The network is further consolidated by C-H⋯π inter-actions.

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Di-μ-bromido-bis-({bis-[2-(2-pyrid-yl)eth-yl]amine}copper(II)) bis-(perchlorate).

Project description:Each Cu atom in the dinuclear centrosymmetric title complex, [Cu(2)Br(2)(C(14)H(17)N(3))(2)](ClO(4))(2), is ligated in a distorted square-pyramidal geometry (τ = 0.31) by a tridentate bis-[2-(2-pyrid-yl)eth-yl]amine ligand, and by two bridging Br atoms. In addition, the dinuclear species is stabilized by two hydrogen-bonded perchlorate anions.

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4-[Bis(4-fluoro-phen-yl)meth-yl]piperazin-1-ium bis-(trichloro-acetate) 0.4-hydrate.

Project description:The title compound, C(17)H(20)F(2)N(2) (2+)·2C(2)Cl(3)O(2) (-)·0.4H(2)O, has twofold protonated N atoms. The trichloro-acetate anions each show one disordered Cl atom with site occupation factors of 0.945 (7):0.055 (7) 0.945 (8):0.055 (8). In the crystal, N-H⋯O, O(water)-H⋯O and O(water)-H⋯F inter-actions connect the components into a three-dimensional network.

| S-EPMC3343943 | biostudies-literature

Dichlorido(4-meth-oxy-2-{[2-(piperazin-4-ium-1-yl)eth-yl]imino-meth-yl}phenol-ate)cadmium.

Project description:In the title compound, [CdCl(2)(C(14)H(21)N(3)O(2))], the Schiff base ligand chelates the Cd(II) ion in an N,N,O-tridentate fashion. Two Cl atoms complete a distorted square-pyramidal coordination environment around the metal atom. In the crystal, adjacent mol-ecules are linked through C-H?? inter-actions into infinite chains along the a axis. The mol-ecules are further connected into a three-dimensional network via N-H?O, N-H?Cl and C-H?Cl inter-actions. The ethyl-ene group is disordered over two sets of sites in a 0.520?(10):0.480?(10) ratio.

| S-EPMC3151769 | biostudies-literature

4-[2-(Pyridin-1-ium-4-yl)eth-yl]pyridin-1-ium bis-(2,6-di-nitro-benzoate).

Project description:The asymmetric unit of the title salt, C12H14N2 (2+)·2C7H3N2O6 (-), comprises half a 4-[2-(pyridin-1-ium-4-yl)eth-yl]pyridin-1-ium dication, being disposed about a centre of inversion, and a 2,6-di-nitro-benzoate anion, in a general position. In the anion, the carboxyl-ate group is inclined to the benzene ring [dihedral angle = 85.45?(9)°], whereas near-coplanar and twisted arrangements are found for the nitro groups [O-N-C-C torsion angles = 179.80?(14) and 20.2?(2)°]. In the crystal, three-component aggregates sustained by charge-assisted N(+)-H?O(-) hydrogen bonds are found and these are consolidated into a three-dimensional architecture by C-H?O and ?-? [inter-centroid distances = 3.6796?(14) and 3.7064?(14)?Å] inter-actions.

| S-EPMC3884282 | biostudies-literature

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