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1-(Phthalimidometh-yl)pyridinium p-toluene-sulfonate.

ABSTRACT: In the crystal of the title compound, C(14)H(11)N(2)O(2) (+)·C(7)H(7)O(3)S(-), the cation and anion inter-act by way of an aromatic π-π inter-action [centroid-centroid separation = 3.5783 (2) Å] and a T-stacking (C-H⋯π) inter-action between cations. The dihedral angle between the aromatic rings in the cation is 61.73 (8)°. The ionic units are aligned in a zigzag fashion in the b-axis direction.

SUBMITTER: Bartholoma MD

PROVIDER: S-EPMC2967974 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-Hy-droxy-pyridinium p-toluene-sulfonate.

Project description:In the title molecular salt, C(5)H(6)NO(+)·C(7)H(7)O(3)S(-), the cations and anions are connected by N-H?O and O-H?O hydrogen bonds, forming [100] chains.

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Project description:In the title compound, C(7)H(11)N(2) (+)·C(7)H(7)O(3)S(-), the cation is protonated at the N atom of the heterocyclic ring. The dimethyl-amino group lies close to the pyridinium ring plane with a dihedral angle between the pyridinium and the dimethyl-amine CNC planes of 3.82?(17)°. The N-C bond linking the dimethyl-amino substituent to the pyridinium ring is characteristically short [1.3360?(19)?Å], suggesting some delocalization in the cation. In the crystal structure, N-H?O hydrogen bonds link individual pairs of cations and anions. The structure is further stabilized by an extensive series of C-H?O hydrogen bonds, augmented by ?-? [centroid-centroid distance between adjacent pyridinium rings = 3.5807?(10)?Å] and C-H?? inter-actions, giving a network structure.

| S-EPMC2960775 | biostudies-literature

5,22-Stigmastadien-3?-yl p-toluene-sulfonate.

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Pyridinium 4-(trifluoro-meth-yl)benzene-sulfonate.

Project description:The title salt, C(5)H(6)N(+)·C(7)H(4)F(3)O(3)S(-), is an ion pair in which the pyridium cation is linked to the 4-(trifluoro-meth-yl)benzene-sulfonate anion by an N-H?O hydrogen bond. The F atoms of the trifluoro-methyl group are disordered over two sites in a 0.584?(9):0.416?(9) ratio.

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Bis(carboxy-meth-yl)ammonium 4-toluene-sulfonate.

Project description:The imino-diacetic acid component of the title salt, C(4)H(8)NO(4) (+)·C(7)H(7)SO(3) (-), is protonated at the N atom. The cation uses the ammonium group to form hydrogen bonds to the O atoms of two adjacent sulfonate groups. In addition, the carboxylic acid portions of the cation form hydrogen bonds to the sulfonate groups. The hydrogen-bonding inter-actions give rise to a layer structure.

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2,3:4,5-Di-O-isopropyl-idenefructos-1-yl p-toluene-sulfonate.

Project description:The title compound, C(19)H(26)O(8)S, has been synthesized from 2,3:4,5-di-O-isopropyl-idene-?-d-fructopyran-ose. The absolute configuration of the fused ring is confirmed by anomalous dispersion effects in the diffraction measurement. The six-membered ?-fructopyran-ose ring has a twist-boat conformation with the two five-membered rings trans to each other. In the crystal, inter-molecular non-classical C-H?O hydrogen bonds link the mol-ecules into a three-dimensional network.

| S-EPMC3011573 | biostudies-literature

1-Methyl-4-[(E)-2-(2-thien-yl)ethen-yl]pyridinium 4-chloro-benzene-sulfonate.

Project description:In the title compound, C(12)H(12)NS(+)·C(6)H(4)ClO(3)S(-), the cation is almost planar and exists in the E configuration. The cations and anions form alternate layers parallel to the ab plane. Within each layer, both cations and anions form chains directed along the b axis. The mol-ecules are inter-connected by weak C-H?O inter-actions into a three-dimensional network. The crystal structure is further stabilized by C-H?? inter-actions involving the thio-phene ring. The sulfonate and thio-phene groups are involved in weak intra-molecular C-H?O and C-H?S inter-actions, respectively. The latter intra-molecular hydrogen bonds produce S(5) ring motifs.

| S-EPMC2960744 | biostudies-literature

(E)-1-Methyl-4-[2-(1-naphth-yl)vin-yl]pyridinium 4-chloro-benzene-sulfonate.

Project description:In the title compound, C(18)H(16)N(+)·C(6)H(4)ClO(3)S(-), the cation exists in an E configuration with respect to the central C=C bond. The naphthalene ring system is slightly bent, the dihedral angle between the two aromatic rings being 3.71 (14)°. The whole cation is twisted, the dihedral angles between the pyridinium and the two aromatic rings of the naphthalene ring system being 47.44 (14) and 50.81 (14)°. The pyridinium ring and the benzene ring of the anion are inclined to each other at a dihedral angle of 68.21 (13)°. In the crystal structure, the cations and anions are arranged alternately with the cations stacked in an anti-parallel manner along the c axis and the anions linked into chains along the same direction. The cations are linked to the anions by weak C-H⋯O inter-actions, forming a three-dimensional network. The crystal structure is further stabilized by C-H⋯π inter-actions and π-π contacts with centroid-centroid distances of 3.6374 (16) and 3.6733 (17) Å. A short Cl⋯O contact [3.108 (2) Å] is also present.

| S-EPMC2971983 | biostudies-literature

(E)-1-Methyl-4-[2-(1-naphth-yl)vin-yl]pyridinium 4-bromo-benzene-sulfonate.

Project description:In the title compound, C(18)H(16)N(+)·C(6)H(4)BrO(3)S(-), the cation exists in the E configuration and the whole mol-ecule of the cation is disordered with a refined site-occupancy ratio of 0.733 (1):0.267 (1). The naphthalene system is not planar, the inter-planar angle between the two aromatic rings being 5.0 (5)° for the major component and 5.7 (10)° for the minor component. The cation is twisted with dihedral angles between the pyridinium ring and the two aromatic rings of the naphthalene system of 56.3 (5) and 51.4 (5)° (for the major component) and 52.2 (11) and 53.4 (11)° (for the minor component). The pyridinium ring and the benzene ring of the anion are inclined to each other at inter-planar angles of 85.0 (4) and 71.5 (9)° for the major and minor components, respectively. In the crystal packing, the cations and anions are alternately arranged with the cations stacked in an anti-parallel manner along the c axis and the anions linked together into chains along the same direction. The cations are linked to the anions into chains along [102] by weak C-H⋯O inter-actions. The crystal structure is further stabilized by C-H⋯π inter-actions and π-π contacts, with Cg⋯Cg distances of 3.502 (9) and 3.698 (6) Å. A short Br⋯O contact [3.029 (4) Å] is also present.

| S-EPMC2977813 | biostudies-literature

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