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5-[(1H-Benzimidazol-1-yl)meth-yl]benzene-1,3-dicarb-oxy-lic acid.

ABSTRACT: Crystals of the title compound, C(16)H(12)N(2)O(4), were obtained accidentally from a hydro-thermal reaction of 5-[(1H-benzimidazol-1-yl)meth-yl]isophthalic acid with manganese bromide in the presence of N,N'-dimethyl-formamide. In the title mol-ecule, the benzimidazole ring system is almost planar, with a maximum deviation from the mean plane of 0.010 (2) Å. The benzimidazole and central benzene rings are inclined at a dihedral angle of 71.7 (6)°. The crystal structure is stabilized by O-H⋯N and O-H⋯O hydrogen bonds.

SUBMITTER: Cheng XC

PROVIDER: S-EPMC3238952 | biostudies-literature |

REPOSITORIES: biostudies-literature

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A monoclinic polymorph of 5-[(1H-benzimidazol-1-yl)meth-yl]benzene-1,3-dicarb-oxy-lic acid.

Project description:Crystals of the title compound, C(16)H(12)N(2)O(4), were obtained accidentally by the hydro-thermal reaction of 5-[(1H-benzo[d]imidazol-1-yl)meth-yl]isophthalic acid with manganese chloride tetra-hydrate in the presence of KOH as alkaline reagent for the deprotonation. A triclinic polymorph of this structure has been reported previously from a similar reaction [Cheng (2011 ?). Acta Cryst. E67, o3299]. The benzimidazole ring system is almost planar, with a maximum deviation from the mean plane of 0.020?(4)?Å. The benzimidazole unit and benzene ring are inclined at a dihedral angle of 68.17?(4)°, reflecting the axial rotation of the flexible benzimidazolyl arm. In the crystal, pairs of O-H?O hydrogen bonds link adjacent mol-ecules into inversion dimers. O-H?N contacts connect these dimers into zigzag chains along [010].

| S-EPMC3515175 | biostudies-literature

2-[3-(1H-Benzimidazol-2-yl)prop-yl]-1H-benzimidazol-3-ium 3,5-dicarb-oxy-benzoate-benzene-1,3,5-tricarb-oxy-lic acid-water (1/1/1).

Project description:The title compound, C(17)H(17)N(4) (+)·C(9)H(5)O(6) (-)·C(9)H(6)O(6)·H(2)O, contains a protonated 2,2'-(1,3-propanedi-yl)bis-(1H-benzimidazole) cation, a deprotonated benzene-1,3,5-tricarb-oxy-lic acid anion, a neutral benzene-1,3,5-tricarb-oxy-lic acid mol-ecule and a water mol-ecule, which are linked together through N-H?O, O-H?O and weak C-H?O hydrogen bonds into almost double sheets parallel to (4). These hydrogen-bonded sheets are packed in the crystal with the formation of centrosymmetric voids of 25.5?Å(3), which are filled by the water mol-ecules.

| S-EPMC3009361 | biostudies-literature

Benzene-1,3-dicarb-oxy-lic acid-1,2-bis-(4-pyrid-yl)ethene (1/1).

Project description:In the title compound, C(12)H(10)N(2)·C(8)H(6)O(4), the asymmetric unit contains two halves of 1,2-bis-(4-pyrid-yl)ethene (bpe) mol-ecules and one benzene-1,3-dicarb-oxy-lic acid (1,3-H(2)BDC) mol-ecule. These bpe and 1,3-H(2)BDC mol-ecules are linked by classical O-H?N hydrogen bonds, forming an extended one-dimensional zigzag chain. Each chain is further linked with neighboring ones by ?-? inter-actions between the pyridine and aromatic rings [centroid-centroid distances = 3.9306?(15)?Å] and the pyridine rings of pairs of symmetry-related mol-ecules [centroid-centroid distances = 3.5751?(15), 3.7350?(15) and 3.6882?(15)?Å], with the formation of a three-dimensional supra-molecular framework.

| S-EPMC3247433 | biostudies-literature

2-(2-Carb-oxy-eth-yl)-1,3-dioxoisoindoline-5,6-dicarb-oxy-lic acid methanol monosolvate.

Project description:In the title compound, C(13)H(9)NO(8)·CH(3)OH, the main mol-ecule possesses three carb-oxy-lic acid groups, which are asymmetrically distributed around the mol-ecule core. This results in hydrogen-bonding motifs ranging from a chain to various rings. The combination of the chain motif together with a carb-oxy-lic dimer R(2) (2)(8) ring motif creates a ribbon of mol-ecules propagating along the c-axis direction. A second ribbon results from the combination of the chain motif together with a methanol solvent mol-ecule and carboxyl-containing R(4) (4)(12) ring motif. These two ribbons combine alternately, forming a hydrogen-bonded layer of mol-ecules parallel to (2[Formula: see text]0).

| S-EPMC3254468 | biostudies-literature

4-[(4-Meth-oxy-benzene-sulfonamido)-meth-yl]cyclo-hexane-1-carb-oxy-lic acid.

Project description:In the title compound, C(15)H(21)NO(5)S, two crystallographically independent mol-ecules are linked into a dimer by a pair of N-H⋯O hydrogen bonds, forming an R(2) (2)(8) ring motif. In the crystal, mol-ecules are further linked by inter-molecular O-H⋯O hydrogen bonds into a two-dimensional network parallel to (012). Additional stabilization is provided by weak inter-molecular C-H⋯O hydrogen bonds.

| S-EPMC3200917 | biostudies-literature

Benzene-1,2-dicarb-oxy-lic acid-pyridinium-2-olate (1/1).

Project description:The asymmetric unit of the title compound, C(5)H(5)NO·C(8)H(6)O(4), contains one o-phthalate acid mol-ecule and one pyridin-2-ol mol-ecule, which exists in a zwitterionic form. In the o-phthalate acid mol-ecule, the carboxyl-ate groups are twisted from the benzene ring by dihedral angles of 13.6?(1)° and 73.1?(1)°; the hy-droxy H atom in the latter group is disordered over two positons in a 1:1 ratio. In the crystal, O-H?O and N-H?O hydrogen bonds link the mol-ecules into zigzag chains in [-101].

| S-EPMC3393265 | biostudies-literature

1-{[4'-(1H-1,2,4-Triazol-2-ium-1-ylmeth-yl)biphenyl-4-yl]meth-yl}-1H-1,2,4-triazol-2-ium bis-(3-carb-oxy-5-iodo-benzoate)-5-iodo-benzene-3,5-dicarb-oxy-lic acid-water (1/2/2).

Project description:The neutral carb-oxy-lic acid mol-ecule and the carboxyl-ate anion in the title compound, C(18)H(18)N(6) (2+)·2C(8)H(4)IO(4) (-)·2C(8)H(5)IO(4)·2H(2)O, are both nearly planar (r.m.s. deviations = 0.034 and 0.045?Å, respectively). In the cation, the mid-point of the C-C bond linking the two benzene rings lies on a center of inversion, and the triazole ring is approximately perpendicular to the adjacent benzene ring [dihedral angle = 83.2?(3)°]. In the crystal, the cations, anions, carb-oxy-lic acid and lattice water mol-ecules are linked by N-H?O, O-H?N and O-H?O hydrogen bonds, generating a ribbon running along [1-10]. The crystal studied was a non-merohedral twin with the components in a 51.2?(1):48.8?(1) ratio.

| S-EPMC3344494 | biostudies-literature

2-[(1H-Benzimidazol-1-yl)meth-yl]phenol benzene hemisolvate.

Project description:In the title solvate, C14H12N2O·0.5C6H6, the complete benzene molecule is generated by a crystallographic inversion centre. The dihedral angle between the planes of the benzimidazole moiety and the phenol substituent is 75.28 (3)°. In the crystal, O-H⋯N hydrogen bonds link the mol-ecules into parallel chains propagating along [100]. The mol-ecules are further connected by C-H⋯π inter-actions.

| S-EPMC3998331 | biostudies-literature

4-Carbamoylpiperidinium 2-carb-oxy-benzoate-benzene-1,2-dicarb-oxy-lic acid (1/1).

Project description:The asymmetric unit of the title salt adduct, C(6)H(13)N(2)O(+)·C(8)H(5)O(4) (-)·C(8)H(6)O(4), comprises one isonipecotamide cation, a hydrogen phthalate anion and a phthalic acid adduct mol-ecule. These form a two-dimensional hydrogen-bonded network through head-to-tail cation-anion-adduct mol-ecule inter-actions which include a cyclic heteromolecular amide-carboxyl-ate motif [graph set R(2) (2)(8)], conjoint cyclic R(2) (2)(6) and R(3) (3)(10) piperidinium N-H⋯O(carbox-yl) associations, as well as strong carboxyl O-H⋯O(carbox-yl) hydrogen bonds.

| S-EPMC3052136 | biostudies-literature

Biphenyl-3,3'-dicarb-oxy-lic acid.

Project description:The asymmetric unit of the title compound, C(14)H(10)O(4), contains one half mol-ecule, the complete mol-ecule being generated by a twofold axis. The two benzene rings form a dihedral angle of 43.11?(5)°. Inter-molecular O-H?O hydrogen bonds link the mol-ecules into one-dimensional zigzag chains. These chains are further connected into two-dimensional supra-molecular layers by weak ?-? stacking inter-actions between neighbouring benzene rings, with centroid-centroid distances of 3.7648?(8)?Å.

| S-EPMC3089151 | biostudies-literature

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