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4-(3-Eth-oxy-4-hydroxy-styr-yl)-1-methyl-pyridinium tosyl-ate monohydrate.

ABSTRACT: In the title compound, C(16)H(18)NO(2) (+)·C(7)H(7)O(3)S(-)·H(2)O, the dihedral angle between the pyridyl and benzene rings of the pyridinium cation is 0.2 (1)°. The benzene ring of the tosyl-ate anion makes a dihedral angle of 4.8 (2)° with the best mean plane of the pyridinium cation. The pyridinium cation and the tosyl-ate anion are hydrogen bonded to the water mol-ecule, and the crystal packing is further stabilized by inter-molecular C-H⋯O and π-π inter-actions [centroid-centroid separations of 3.648 (3) and 3.594 (2) Å.

SUBMITTER: Murugavel S

PROVIDER: S-EPMC2967981 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structure of (E)-4-{4-[eth-yl(2-hydroxy-eth-yl)amino]-styr-yl}-1-methyl-pyridinium nitrate hemihydrate.

Project description:The asymmetric unit of the title compound, C18H23N2O(+)·NO3 (-)·0.5H2O, contains two independent 4-{4-[eth-yl(2-hy-droxy-eth-yl)amino]-styr-yl}-1-methyl-pyridin-1-ium cations, two nitrate anions and one lattice water mol-ecule. In the cations, the pyridine ring is twisted with respect by 7.98?(12) and 18.42?(10)° to the benzene ring. In the crystal, the cations, the anions and the lattice water mol-ecules are linked by O-H?O hydrogen bonds and weak C-H?O hydrogen bonds, forming a three-dimensional supra-molecular architecture. ?-? stacking occurs between pyridine and benzene rings of adjacent cations, the centroid-centroid distances being 3.8169?(15) and 3.8663?(14)?Å. In the crystal, one of the independent cations is disordered, the central vinyl unit and the terminal hy-droxy-lethyl group being disordered over two sets of sites with site occupancy factors of 0.600?(6) and 0.400?(6).

| S-EPMC4384630 | biostudies-literature

1-Methyl-2-[(E)-2,4,5-trimeth-oxy-styr-yl]pyridinium 4-meth-oxy-benzene-sulfonate monohydrate.

Project description:In the title compound, C(17)H(20)NO(3) (+)·C(7)H(7)O(4)S(-)·H(2)O, the cation exists in an E configuration with respect to the C=C bond and is twisted with a dihedral angle of 17.81?(8)° between the pyridinium and benzene rings. The benzene ring of the anion is almost parallel to the pyridinium ring [dihedral angle = 3.45?(9)°], whereas it is inclined to the benzene ring of the cation [dihedral angle = 17.62?(8)°]. The crystal structure is stabilized by O-H?O hydrogen bonds and weak C-H?O inter-actions which link the cations, anions and water mol-ecules into chains along the a axis. ?-? inter-actions with centroid-centroid distances of 3.7751?(9) and 3.7920?(11)?Å are also observed.

| S-EPMC3100012 | biostudies-literature

Methyl 4-(3-eth-oxy-4-hydroxy-phen-yl)-6-methyl-2-oxo-1,2,3,4-tetra-hydro-pyrimidine-5-carboxyl-ate monohydrate.

Project description:In the title compound, C(15)H(18)N(2)O(5)·H(2)O, the pyrimidine ring adopts a flattened-boat conformation. The eth-oxy group attached to the benzene ring is in an extended conformation. The oxopyrimidine mol-ecules are linked into centrosymmetric R(2) (2)(20) dimers by O-H⋯O hydrogen bonds. The dimers are linked by N-H⋯O hydrogen bonds, forming a two-dimensional network parallel to the bc plane. Adjacent networks are cross-linked via N-H⋯O and O-H⋯O hydrogen bonds involving the water mol-ecules.

| S-EPMC2977098 | biostudies-literature

(E)-2-[4-(Diethyl-amino)-styr-yl]-1-methyl-pyridinium 4-meth-oxy-benzene-sulfonate monohydrate.

Project description:In the cation of the title compound, C(18)H(23)N(2) (+)·C(7)H(7)O(4)S(-)·H(2)O, one ethyl group of the diethyl-amino unit is disordered over two sets of sites in a 0.665 (6):0.335 (6) ratio. The styrylpyridinium unit is nearly planar, with a dihedral angle between the pyridinium and benzene rings of 4.27 (8)°. In the crystal, the anion ring is almost perpendicular to the aromatic rings of the cation; the sulfonate-substituted benzene ring forms dihedral angles of 89.60 (8) and 89.37 (8)°, respectively, with the pyridinium and benzene rings of the cation. In the crystal, the three components are linked into a three-dimensional network by O-H⋯O and C-H⋯O hydrogen bonds. π-π inter-actions with centroid-centroid distances of 3.6999 (9) and 3.7106 (9) Å are also present.

| S-EPMC3435741 | biostudies-literature

1-Methyl-2-[(E)-2,4,5-trimeth-oxy-styr-yl]-pyridinium iodide.

Project description:In the title compound, C(17)H(20)NO(3) (+)·I(-), the cation exists in the E configuration. The pyridinium and benzene rings are close to coplanar, with a dihedral angle of 7.43?(12)° between them. The three meth-oxy groups of 2,4,5-trimeth-oxy-phenyl are essentially coplanar with the benzene plane, with C-O-C-C torsion angles of 1.0?(3), -1.9?(3) and 3.6?(3)°. A weak intra-molecular C-H?O inter-action generates an S(6) ring motif. In the crystal, the cations are stacked in columns in an anti-parallel manner along the a axis through ?-? inter-actions, with a centroid-centroid distance of 3.7714?(16)?Å. The iodide anion is situated between the columns and linked to the cation by a weak C-H?I inter-action.

| S-EPMC3011747 | biostudies-literature

4-(4-Bromo-styr-yl)-1-methylpyridinium tosyl-ate.

Project description:In the cation of the title compound, C14H13BrN(+)·C7H7O3S(-), the dihedral angle between the benzene and pyridine rings is 8.34?(11)°. The Br atom is disordered over two positions with site occupancies of 0.74?(2) and 0.26?(2). The mol-ecular structure is stabilized by a weak intra-molecular C-H?O inter-actions. The crystal structure exhibits weak C-H?O and ?-? [centroid-centroid distance = 3.7466?(17)?Å] inter-actions, forming a three dimensional network.

| S-EPMC3648231 | biostudies-literature

2-[(E)-2-(4-Eth-oxy-phen-yl)ethen-yl]-1-methyl-pyridinium 4-chloro-benzene-sulfonate monohydrate.

Project description:In the title compound, C(16)H(18)NO(+)·C(6)H(4)ClO(3)S(-)·H(2)O, the cation exists in an E configuration with respect to the ethenyl bond and is slightly twisted with a dihedral angle of 9.85 (5)° between the pyridinium and the benzene rings. The anion is inclined to the cation with the dihedral angles between the benzene ring of the anion and the pyridinium and benzene rings of the cation of 78.33 (6) and 68.73 (6)°, respectively. In the crystal, the cations and anions are arranged alternately into head-to-head ribbons along the c axis, with the cationic ribbons stacked along the b axis. The crystal is consolidated by O-H⋯O hydrogen bonds, weak C-H⋯O and C-H⋯π inter-actions. π-π inter-actions with centroid-centroid distances of 3.6111 (7) and 3.6466 (7) Å are also observed.

| S-EPMC3051682 | biostudies-literature

(E)-2-[4-(Dimethyl-amino)-styr-yl]-1-methyl-pyridinium 4-methyl-benzene-sulfonate monohydrate.

Project description:The cation of the title compound, C(16)H(19)N(2) (+)·C(7)H(7)O(3)S(-)·H(2)O, exists in the E configuration with respect to the C=C double bond and is essentially planar, the dihedral angle between the pyridinium and benzene rings being 3.55?(13)°. In the crystal, ?-conjugated planes of cations and anions are inclined to each other at 84.30?(11)°. The crystal structure is stabilized by O-H?O hydrogen bonds and weak C-H?O inter-actions, which link the cations, anions and water mol-ecules into chains along the b axis. These chains are stacked along the a axis by ?-? inter-actions with centroid-centroid distances of 3.6032?(16) and 3.6462?(16)?Å.

| S-EPMC3007387 | biostudies-literature

2-[(E)-4-(Dimethyl-amino)-styr-yl]-1-methyl-pyridinium 4-chloro-benzene-sulfonate monohydrate.

Project description:In the title hydrated mol-ecular salt, C(16)H(19)N(2) (+)·C(6)H(4)ClO(3)S(-)·H(2)O, the 2-[4-(dimethyl-amino)-styr-yl]-1-methyl-pyridinium cation exists in an E configuration with respect to the C=C bond and is slightly twisted, with the dihedral angle between the pyridinium and benzene rings being 9.33?(10)°. In the crystal structure, the packing is stabilized by O-H?O hydrogen bonds and weak C-H?O inter-actions, which link the cations, anions and water mol-ecules into chains propagating in [010]. These chains are stacked along the a axis by ?-? inter-actions, with centroid-to-centroid distances of 3.6429?(12) and 3.6879?(12)?Å; weak C-H?? inter-actions are also observed.

| S-EPMC3009047 | biostudies-literature

(E)-2-[4-(Diethyl-amino)-styr-yl]-1-methyl-pyridinium 4-chloro-benzene-sulfonate monohydrate.

Project description:In the title hydrated mol-ecular salt, C(18)H(23)N(2) (+)·C(6)H(4)ClO(3)S(-)·H(2)O, which shows moderate biological activity against methicillin-resistant Staphylococcus aureus (MRSA), one ethyl group of the 2-[4-(diethyl-amino)-styr-yl]-1-methyl-pyridinium cation is disordered over two orientations in a 0.604 (13):0.396 (13) ratio. The main part of the cation is nearly planar with a dihedral angle of 4.50 (10)° between the pyridinium and benzene rings. In the crystal, the components are linked by O-H⋯O hydrogen bonds and C-H⋯O weak inter-actions. Aromatic π-π stacking inter-actions with centroid-centroid separations of 3.7363 (12) and 3.7490 (13) Å also occur.

| S-EPMC3200709 | biostudies-literature

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