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3-(Ammonio-methyl)-pyridinium bis-(perchlorate).

ABSTRACT: In the title molecular salt, C6H10N2 (2+)·2ClO4 (-), the Cl-O bond lengths [anion 1: 1.369 (3)-1.415 (3); anion 2: 1.420 (2)-1.441 (2) Å] and the O-Cl-O angles [anion 1: 105.4 (2)-111.8 (4); anion 2: 107.8 (1)-110.3 (1)°] indicate a slight distortion of the perchlorate anions from regular tetra-hedral symmetry. In the crystal, the components are linked into columns along the a-axis direction via N-H⋯O and C-H⋯O hydrogen bonds, with stacks of the organic mol-ecules being surrounded by stacks of perchlorate anions.

SUBMITTER: Bayar I

PROVIDER: S-EPMC3684928 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Bis(3-ammonio-methyl-pyridinium) cyclo-tetra-phosphate.

Project description:In the title compound, 2C(6)H(10)N(2) (2+)·P(4)O(12) (4-), which involves a doubly protonated 3-ammonio-methyl-pyridinium cation and a cyclo-tetra-phosphate anion, the cyclo-tetra-phospho-ric ring is arranged around an inversion center and the organic entity alternates with it, forming hybrid ribbons parallel to the b axis. The crystal structure is stabilized by a three-dimensional network of N-H?O and weaker C-H?O hydrogen bonds.

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Crystal structure of 2-cyano-1-methyl-pyridinium perchlorate.

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Project description:In the main mol-ecule of the title compound, C(13)H(11)N(2)O(3) (+)·ClO(4) (-), the two aromatic rings are twisted by 56.19?(3)° relative to each other and the nitro group is not coplanar with the benzene ring [36.43?(4)°]. The crystal packing is dominated by infinite aromatic stacks in the a-axis direction. These are formed by the benzene units of the mol-ecule featuring an alternating arrangement, which explains the two different distances of 3.3860?(4) and 3.4907?(4)?Å for the aromatic units (these are the perpendicular distances of the centroid of one aromatic ring on the mean plane of the other other aromatic ring). Adjacent stacks are connected by ?-? stacking between two pyridinium units [3.5949?(4)?Å] and weak C-H?O inter-actions. The perchlorate anions are accomodated in the lattice voids connected to the cation via weak C-H?O contacts between the O atoms of the anion and various aromatic as well as methyl H atoms.

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Bis{2-[2-(isopropyl-ammonio)ethyl-imino-meth-yl]-5-methoxy-phenolato}copper(II) bis-(perchlorate).

Project description:In the title compound, [Cu(C(13)H(20)N(2)O(2))(2)](ClO(4))(2), the Cu(II) atom in the complex dication is chelated by two phenolate O atoms and two imine N atoms from two zwitterionic 2-[2-(isopropyl-ammonio)ethyl-imino-meth-yl]-5-methoxy-phenolate ligands, forming a distorted square-planar geometry. One of the perchlorate anions is disordered over two sites with occupancies of 0.611?(15) and 0.389?(15). Intra-molecular N-H?O hydrogen bonds are observed in the complex dication. In the crystal structure, the perchlorate anions are linked to complex dications by inter-molecular N-H?O hydrogen bonds.

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4-Ammonio-2,2,6,6-tetra-methyl-piperidinium bis-(dihydrogen phosphate) monohydrate.

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Crystal structures of 2-methyl-pyridinium hydrogen 2,3-bis-(4-methyl-benzo-yloxy)succinate and bis-[4-methyl-pyridinium hydrogen 2,3-bis-(4-methyl-benzo-yloxy)succinate] penta-hydrate.

Project description:The title salt (I), C6H8N+·C20H17O8-, comprises a 2-methyl-pyridinium cation and a 2,3-bis-(4-methyl-benzo-yloxy)succinate mono-anion while the salt (II), 2C6H8N+·2C20H17O8-·5H2O, consists of a pair of 4-methyl-pyridinium cations and 2,3-bis-(4-methyl-benzo-yloxy)succinate mono-anions and five water mol-ecules of solvation in the asymmetric unit. In (I), the dihedral angle between the aromatic rings of the anion is 40.41 (15)°, comparing with 43.0 (3) and 85.7 (2)° in the conformationally dissimilar anion mol-ecules in (II). The pyridine ring of the cation in (I) is inclined at 23.64 (16) and 42.69 (17)° to the two benzene moieties of the anion. In (II), these comparative values are 4.7 (3), 43.5 (3)° and 43.5 (3), 73.1 (3)° for the two associated cation and anion pairs. The crystal packing of (I) is stabilized by inter-ionic N-H⋯O, O-H⋯O and C-H⋯O hydrogen bonds as well as weak C-H⋯π inter-actions, linking the ions into infinite chains along [100]. In the crystal packing of (II), the anions and cations are also linked by N-H⋯O and O-H⋯O hydrogen bonds involving also the water mol-ecules, giving a two-dimensional network across (001). The crystal structure is also stabilized by weak C-H⋯O and C-H⋯π inter-actions.

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N,N'-Bis(2-ammonio-benz-yl)ethane-1,2-diammonium-nitrate-perchlorate (1/1.5/2.5).

Project description:The title compound, C(16)H(26)N(4) (4+)·2.5ClO(4) (-)·1.5NO(3) (-), is an organic salt in which the cation is a fully protonated tetra-mine. The cation lies on an inversion center and, as a consequence, both benzene rings are parallel. The central chain is found in an all-trans arrangement, a conformation different from that observed in the crystal structure of the non-protonated mol-ecule. The charges are balanced by a mixture of nitrate and perchlorate ions. One site is occupied by an ordered perchlorate ion, while the other contains both nitrate and perchlorate ions, with occupancies of 0.75 and 0.25, respectively. In the crystal, the NH(2) (+) groups of the cation form N-H?O hydrogen bonds with the anions. The NH(3) (+) groups also behave as donor groups, allowing the building of chains along [100], alternating cations and disordered anions being connected via N-H?O hydrogen bonds.

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Project description:In the title salt, C(6)H(10)N(2) (2+)·2Br(-), the non-H atoms of the 3-methyl-pyridinium unit of the cation are almost coplanar (r.m.s. deviation = 0.0052?Å). In the crystal, the dications and Br anions are linked by a combination of six hydrogen bonds, viz. one N(py)-H?Br, two C-H?Br and three H(2)N-H?Br, into supra-molecular layers, parallel to the bc plane, composed of alternating R(2) (4)(10) and R(2) (4)(8) loops. Weak ?-? inter-actions between cationic rings with centroid-centroid distances of 3.891?(2)?Å are also observed.

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4-Amino-3-ammonio-pyridinium dichloride.

Project description:The anions and cations of the title compound, C(5)H(9)N(3) (2+)·2Cl(-), are connected by two chloride-bridged three-centered N-H?Cl hydrogen bonds into a three-dimensional network. The aromatic rings are not involved in stacking inter-actions.

| S-EPMC2968050 | biostudies-literature

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