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3,3'-Bis(3-meth-oxy-benz-yl)-1,1'-(ethane-1,2-diyl)-diimidazolium dibromide dihydrate.

ABSTRACT: In the title compound, C(24)H(28)N(4)O(2) (2+)·2Br(-)·2H(2)O, the diimid-azo-lium cation is located on an inversion center. The imidazole and the benzene rings make a dihedral angle of 68.08 (04)°. In the crystal, O-H⋯Br, C-H⋯O and C-H⋯Br hydrogen bonds link the diimidazolium cations, the bromide anions and the water mol-ecules into a two-dimensional network.

SUBMITTER: Lee HM

PROVIDER: S-EPMC3239092 | biostudies-literature |

REPOSITORIES: biostudies-literature

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3,3'-Dimethyl-1,1'-ethyl-ene-diimidazolium dibromide.

Project description:The title compound, C(10)H(16)Br(2)N(4), was synthesized by the reaction of 1-methyl-imidazole and 1,2-dibromo-ethane in toluene. The complete dication is generated by a crystallographic inversion centre situated at the mid-point of the ethane C-C bond. In the crystal structure, weak inter-molecular C-H?Br inter-actions link the mol-ecules into chains along the b axis and an intramolecular C-H?Br close contact is also present.

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3,3'-Dimethyl-1,1'-methyl-ene-diimidazolium dibromide.

Project description:In the crystal structure of the title compound, C(9)H(14)N(4) (2+)·2Br(-), the cation and anions have crystallographic mirror symmetry, with the mirror plane running through the central CH(2) group for the cation. The latter are stacked along the a axis, forming channels hosting the bromide anions. The crystal packing is stabilized by C-H?Br hydrogen-bonding inter-actions, generating a two-dimensional network.

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Poly[3,3'-diethyl-1,1'-(ethane-1,2-di-yl)diimidazolium [tetra-?-bromido--diargentate(I)]].

Project description:The asymmetric unit of the title salt, {(C(12)H(20)N(4))[Ag(2)Br(4)]}(n), contains one-half of a substituted imidazolium cation, one Ag(+) and two Br(-) ions. The cation is completed by crystallographic inversion symmetry. The crystal structure is made up from polymeric sheets of {[AgBr(2)](-)}(n) anions extending parallel to (100). The basic building unit of the anion is a slightly distorted AgBr(4) tetra-hedron. A four- and 12-membered ring system is formed by corner sharing of the AgBr(4) tetra-hedra. The imidazolium cations are located between the anionic sheets and partly protrude into the voids defined by the 12-membered rings.

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Project description:In the title mol-ecule, C(23)H(18)O(5), the meth-oxy-substituted benzene ring makes dihedral angles of 65.12?(4) and 88.55?(4)° with the other two benzene rings. These two benzene rings form a dihedral angle of 45.70?(4)°. In the crystal, mol-ecules are linked into inversion dimers by pairs of weak C-H?O hydrogen bonds.

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3,3'-Bis(3-methoxy-benz-yl)-1,1'-ethyl-enediimidazolium dibromide.

Project description:In the title compound, C(24)H(28)N(4)O(2) (2+)·2Br(-), the imidazolium cation is located on an inversion centre. The two imidazole rings are parallel to each other, whereas the imidazole and benzene rings make a dihedral angle of 77.25 (16)°. Non-classical inter-molecular C-H⋯Br hydrogen bonds link the imidazolium cations and the bromide anions into a three-dimensional network.

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3,3'-(Ethane-1,2-diyl)bis(6-meth-oxy-3,4-dihydro-2H-1,3-benzoxazine) mono-hydrate.

Project description:The asymmetric unit of the title compound, C(20)H(24)N(2)O(4)·H(2)O, contains one half-organic mol-ecule (an inversion centre generates the other half of the mol-ecule) and a half-mol-ecule of water (the O atom has site symmetry 2). The near planarity of the fused-benzene ring is illustrated by the very small deviations of all the atoms from the plane [largest deviation = 0.0092 (11) Å. The six-membered N,O-containing ring adopts a half-chair conformation. The observed N-CH(2) and CH(2)-O bond lengths can be correlated to the manifestation of an anomeric effect in the N-CH(2)-O unit. In the crystal, the mol-ecules are connected into zigzag chains parallel to [001] through O-H⋯N hydrogen bonds formed between the oxazinic N atom and the solvent water mol-ecule. The chains are consolidated by C-H⋯O inter-actions.

| S-EPMC3435746 | biostudies-literature

1-(2-Bromophenyl)ethane-1,2-diyl 1,1'-biphenyl-2,2'-dicarboxylate.

Project description:In the title compound, C(22)H(15)BrO(4), the bromo-benzene ring is inclined at dihedral angles of 23.87 (11) and 52.37 (11)° with respect to the planes of the two benzene rings. The two benzene rings of the biphenyl unit form a dihedral angle of 49.08 (11)°. In the crystal, mol-ecules are linked into [100] chains by C-H⋯O hydrogen bonds.

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3,3'-Di-n-propyl-1,1'-[p-phenyl-enebis(methyl-ene)]diimidazolium dibromide.

Project description:The asymmetric unit of the title compound, C(20)H(28)N(4) (2+)·2Br(-), consists of half a 3,3'-di-n-propyl-1,1'-[p-phenyl-enenis(methyl-ene)]diimidazolium cation and a bromide anion. The cation is located on an inversion center and adopts an ?AAA? trans conformation. In the crystal, the cation is linked to the anions via weak C-H?Br hydrogen bonds.

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3,3'-Dibenzyl-1,1'-ethyl-enediimidazolium dibromide.

Project description:In the title compound, C(22)H(24)N(4) (2+)·2Br(-), the imidazolium dication is located on a crystallographic inversion center. The imidazole and benzene rings make a dihedral angle of 73.1 (9)°. In the crystal, non-classical inter-molecular C-H⋯Br hydrogen bonds link the ion pairs into a two-dimensional network.

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Project description:The title compound, C(18)H(10)O(4), has been isolated as an impurity in commercially available 6,11-dihydr-oxy-5,12-naphth-acenedione. The title compound exhibits yellow fluorescence in the solid state. The mol-ecule has crystallographic inversion symmetry and is planar, with an r.m.s. deviation of 0.031?(1)?Å. The crystal structure is stabilized by C-H?O hydrogen bonds and ?-? stacking inter-actions between 3-methyl-eneisobenzofuran-1(3H)-one units [inter-planar distance 3.43?(1)?Å].

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