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1-(4-Alkyloxybenzyl)-3-methyl-1H-imidazol-3-ium organic backbone: a versatile smectogenic moiety.

ABSTRACT: The merger of ionic liquid and liquid crystal fields, obtained by using the imidazolium ring as a common element, has allowed us to tailor a new set of materials which associate specific functionalities. These functionalities are consequences of the original properties of the component, ionic liquids, liquid crystals and their association in a single compound. The study of this interesting association led us to elaborate environment-flexible cationic architectures from which mesomorphic properties emerge. Moreover, we have also explored the influence of different anions on the mesomorphic properties.

SUBMITTER: Dobbs W

PROVIDER: S-EPMC2839789 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature

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1-(4-Alkyloxybenzyl)-3-methyl-1H-imidazol-3-ium organic backbone: a versatile smectogenic moiety.

Dobbs William W Douce Laurent L Heinrich Benoît B

Beilstein journal of organic chemistry 20091106

The merger of ionic liquid and liquid crystal fields, obtained by using the imidazolium ring as a common element, has allowed us to tailor a new set of materials which associate specific functionalities. These functionalities are consequences of the original properties of the component, ionic liquids, liquid crystals and their association in a single compound. The study of this interesting association led us to elaborate environment-flexible cationic architectures from which mesomorphic properti ...[more]

PMID: 20300460

Similar Datasets

Crystal structures of the two salts 2-methyl-1H-imidazol-3-ium nitrate-2-methyl-1H-imidazole (1/1) and 2-methyl-1H-imidazol-3-ium nitrate.

Project description:The title salts, C4H7N2 (+)·NO3 (-)·C4H6N2, (I), and C4H7N2 (+)·NO3 (-), (II), were obtained from solutions containing 2-methyl-imidazole and nitric acid in different concentrations. In the crystal structure of salt (I), one of the -NH H atoms of the imidazole ring shows half-occupancy, hence only every second mol-ecule is in its cationic form. The nitrate anion in this structure lies on a twofold rotation axis. The neutral 2-methyl-imidazole mol-ecule and the 2-methyl-1H-imidazol-3-ium cation inter-act through N-H⋯N hydrogen bonds to form [(C4H6N2)⋯(C4H7N2)(+)] pairs. These pairs are linked with two nitrate anions on both sides through bifurcated N-H⋯(O,O) hydrogen bonds into chains running parallel to [001]. In the crystal structure of salt (II), the C4H7N2 (+) cation and the NO3 (-) anion are both located on a mirror plane, leading to a statistical disorder of the methyl H atoms. The cations and anions again inter-act through bifurcated N-H⋯(O,O) hydrogen bonds, giving rise to the formation of chains consisting of alternating anions and cations parallel to [100].

| S-EPMC4910320 | biostudies-literature

1-Carboxy-methyl-2-ethyl-4-methyl-1H-imidazol-3-ium chloride monohydrate.

Project description:In the title compound, C(8)H(13)N(2)O(2) (+)·Cl(-)·H(2)O, the methyl C atom of the ethyl group is slightly out of the imidazole plane, with an N-C(ring)-C-C torsion angle of -15.1 (2)°. In the crystal structure, there are strong inter-molecular hydrogen-bonding inter-actions between the solvent water mol-ecule, the free chloride anion and the organic cation, resulting in a two-dimensional supra-molecular network in the ab plane.

| S-EPMC2977760 | biostudies-literature

Bis(2-methyl-1H-imidazol-3-ium) naphthalene-1,5-disulfonate dihydrate.

Project description:The asymmetric unit of the title organic salt, 2C(4)H(7)N(2) (+)·C(10)H(6)O(6)S(2) (2-)·2H(2)O, consists of a 2-methyl-imidazolium cation, a half of a naphthalene-1,5-disulfonate anion, which lies about a center of symmetry, and a water mol-ecule. In the crystal, N-H?O and O-H?O hydrogen bonds link the cations, anions and water mol-ecules into the layers parallel to (111).

| S-EPMC3379225 | biostudies-literature

1-Ethyl-3-methyl-1H-imidazol-3-ium spiro-penta-borate.

Project description:In the anion of the title compound, (C6H11N2)[B5O6(OH)4], both six-membered borate rings adopt a flattened boat conformation with the spiro-B atom and its opposite O atom deviating from the remainders of the rings by 0.261 (3)/0.101 (2) and 0.160 (3)/0.109 (2) Å, respectively. The imidazolium cation also deviates from planarity due to rotation of the ethyl group (as indicated by the C-N-C-C torsion angle) by 71.4 (2)° out of the plane of the heterocycle. In the crystal, the anions are connected in a three-dimensional network through O-H⋯O hydrogen bonds, forming channels along the a-axis direction. The cations are situated in the channels, forming C-H⋯O hydrogen bonds with the anions.

| S-EPMC3998326 | biostudies-literature

3-(2-Bromo-benz-yl)-1-methyl-1H-imidazol-3-ium bromide.

Project description:In the title compound, C(11)H(12)BrN(2) (+)·Br(-), the imidazole and phenyl rings are nearly perpendicular, making a dihedral angle of 87.71?(7)°. The crystal structure is stabilized by non-classical inter-molecular C-H?Br hydrogen bonds and inversion-related mol-ecules are linked through ?-? inter-actions between the imidazole ring systems [centroid-centroid distance = 3.472?(6)?Å].

| S-EPMC3152033 | biostudies-literature

Hydrogen-bonded network in the salt 4-methyl-1H-imidazol-3-ium picrate.

Project description:In the title molecular salt, C4H7N2 (+)·C6H2N3O7 (-), the phenolic proton of the starting picric acid has been transferred to the imidazole N atom. The nitro groups are twisted away from the benzene ring plane, making dihedral angles of 12.8?(2), 9.2?(4) and 29.3?(2)°. In the crystal, the component ions are linked into chains along [010] via N-H?O and bifurcated N-H?(O,O) hydrogen bonds. These chains are further linked by weak C-H?O hydrogen bonds into a three-dimensional network. The complex three-dimensional network can be topologically simplified into a 4-connected uninodal net with the point symbol {4.8(5)}.

| S-EPMC4908564 | biostudies-literature

4-Carb-oxy-2-methyl-1H-imidazol-3-ium-5-carboxyl-ate monohydrate.

Project description:In the title compound, C(6)H(6)N(2)O(4)·H(2)O, one carboxyl group is deprotonated and one imidazole N atom is protonated. The organic mol-ecule, excluding methyl H atoms, is essentially planar, with an r.m.s. deviation of 0.0156 (1) Å. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds link mol-ecules into chains along the b axis; these chains are further linked via O-H⋯O hydrogen bonds involving the water O atoms and carboxyl O atoms, generating a two-dimensional supra-molecular framework.

| S-EPMC2967941 | biostudies-literature

catena-Poly[2-methyl-1H-imidazol-3-ium [(aqua-chloridocadmate)-di-μ-chlorido]].

Project description:The asymmetric unit of the title compound, {(C(4)H(7)N(2))[CdCl(3)(H(2)O)]}(n), contains one 1-methyl-1H-imidazol-3-ium cation, one Cd(II) atom, three Cl atoms and one water mol-ecule. Adjacent Cd ions are inter-connected alternately by paired Cl(-) bridges to generate an infinite one-dimensional coordination chain along the b axis. In the chain, the crystallographically unique Cd(II) atom, with a distorted octa-hedral geometry, is coordinated by five Cl(-) ions and one water mol-ecule. Intra-chain O-H⋯Cl hydrogen bonding and N-H⋯Cl hydrogen bonding between the cations and the anionic chains consolidate the crystal packing.

| S-EPMC3246997 | biostudies-literature

2-Amino-1-methyl-4-oxo-4,5-dihydro-1H-imidazol-3-ium chloride.

Project description:In the crystal structure of the title compound, C(4)H(8)N(3)O(+)·Cl(-), N-H⋯Cl hydrogen bonds link the components into chains along [010]. In addition, weak C-H⋯Cl hydrogen bonds link the chains into a two-dimensional network perpendicular to (001).

| S-EPMC3393986 | biostudies-literature

3-(3-Cyano-benz-yl)-1-methyl-1H-imidazol-3-ium hexa-fluoro-phosphate.

Project description:In the title compound, C(12)H(12)N(3) (+)·PF(6) (-), the hexa-fluoro-phosphate anion is disordered over two orientations with refined site occupancies of 0.8071?(17) and 0.1929?(17). The dihedral angle between the imidazole and benzene rings in the cation is 71.26?(7)°. In the crystal, the cations and anions are linked by C-H?F and C-H?N hydrogen bonds into a three-dimensional network.

| S-EPMC3275236 | biostudies-literature

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