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

ABSTRACT: 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.

SUBMITTER: Ashfaq M

PROVIDER: S-EPMC3200917 | biostudies-literature |

REPOSITORIES: biostudies-literature

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4-[(4-Methyl-benzene-sulfonamido)-meth-yl]cyclo-hexa-necarb-oxy-lic acid.

Project description:The title compound, C(15)H(21)NO(4)S, crystallized with two independent mol-ecules in the asymmetric unit in which the dihedral angles between the mean planes of the benzene and cyclo-hexane rings are 78.3?(2) and 67.6?(2)°. The substituents of the cyclo-hexyl rings are in equatorial orientations. In the crystal, both mol-ecules form R(2) (2)(6) carb-oxy-lic acid inversion dimers via pairs of O-H?O hydrogen bonds. Further N-H?O and C-H?O inter-actions generate a three-dimensional network.

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Crystal structure of 4-{[(2,4-di-hydroxy-benzyl-idene)amino]-meth-yl}cyclo-hexane-carb-oxy-lic acid.

Project description:In the title compound, C15H19NO4, the cyclo-hexyl ring adopts a chair conformation with both exocyclic C-C bonds in equatorial orientations. The dihedral angle between the basal plane of cyclo-hexyl ring and the 2,4-di-hydroxy-benzaldehyde moiety is 84.13 (13)°. An intra-molecular O-H⋯N hydrogen bonds closes an S(6) ring. In the crystal, Oc-H⋯Op (c = carb-oxy-lic acid, p = phenol) hydrogen bonds link the mol-ecules into [100] C(13) chains whereas an Op-H⋯Oc hydrogen bond generates [101] C(15) chains. Together, these bonds generate (010) sheets incorporating R 2 (2)(20) loops. Weak C-H⋯O and C-H⋯π inter-actions also occur.

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(1S*,2S*,4R*,5R*)-Cyclo-hexane-1,2,4,5-tetra-carb-oxy-lic acid.

Project description:The title compound, C10H12O8, a prospective raw material for colourless polyimides which are applied to electronic and microelectronic devices, lies about an inversion centre and the cyclo-hexane ring adopts a chair conformation. Two crystallographycally independent carb-oxy-lic acid groups on adjacent C atoms are in equatorial positions, resulting in a mutually trans conformation. In the crystal, O-H?O hydrogen bonds around an inversion centre and a threefold rotoinversion axis, respectively, form an inversion dimer with an R 2 (2)(8) motif and a trimer with an R 3 (3)(12) motif.

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4,4'-Bipyridine-cyclo-hexane-1,2,4,5-tetra-carb-oxy-lic acid (1/1).

Project description:In the title 1:1 adduct, C(10)H(8)N(2)·C(10)H(12)O(8), the dihedral angle between the pyridine rings in the 4,4-bipyridine molecule is 8.33 (13)°. In the crystal, the cyclo-hexane-1,2,4,5-tetra-carb-oxy-lic acid mol-ecules inter-act with each other through inter-molecular O-H⋯O hydrogen bonds, forming an infinite chain along the a axis, which is further linked perpendicularly by O-H⋯N hydrogen bonds involving bipyridine, resulting in a supra-molecular corrugated sheet parallel to the (110) plane.

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1-Cyclo-hexyl-5-(4-meth-oxy-phen-yl)-1H-pyrazole-4-carb-oxy-lic acid.

Project description:In the title compound, C(17)H(20)N(2)O(3), the meth-oxy-phenyl unit is disordered over two sets of sites in a 0.715 (4):0.285 (4) ratio. The pyrazole ring forms dihedral angles of 55.88 (16) and 72.6 (4)° with the benzene rings of its major and minor components, respectively. The cyclo-hexane ring adopts a chair conformation and its C-N bond is in an equatorial orientation. In the crystal, mol-ecules are linked into inversion dimers by pairs of O-H⋯O hydrogen bonds, generating R(2) (2)(8) loops.

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rac-4-(2-Meth-oxy-phen-yl)-2,6-dimethyl-cyclo-hex-3-ene-carb-oxy-lic acid.

Project description:The title compound, C(16)H(20)O(3), was synthesized to study the hydrogen-bonding inter-actions of the two enanti-omers in the solid state. Inter-molecular O-H⋯O hydrogen bonds produce centrosymmetric R(2) (2)(8) rings which dimerize the two chiral enanti-omers together through their carboxyl groups.

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5-(Hy-droxy-meth-yl)furan-2-carb-oxy-lic acid.

Project description:In the title compound, C(6)H(6)O(4), the furan ring is nearly coplanar with the carboxyl group, the maximum atomic deviation being 0.0248?(9)?Å. The crystal packing is stabilized by classical O-H?O and weak C-H?O hydrogen bonding.

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3-(4-Meth-oxy-phen-yl)-5-methylisoxazole-4-carb-oxy-lic acid.

Project description:In the title compound, C12H11NO4, the dihedral angle between the benzene and isoxazole rings is 42.52?(8)°. The carb-oxy-lic acid group is close to being coplanar with the isoxazole ring [dihedral angle = 5.3?(2)°]. In the crystal, inversion dimers linked by pairs of O-H?O hydrogen bonds generate R2(2)(8) loops.

| S-EPMC3588455 | biostudies-literature

2-{1-[(2-Nitro-benzene-sulfonamido)-meth-yl]cyclo-hexyl}acetic acid.

Project description:In the title compound, C(15)H(20)N(2)O(6)S, the C-SO(2)-NH-C torsion angle is 64.54?(14)°. In the mol-ecule, there is a bifurcated N-H?(O,O) hydrogen bond, forming S(7) rings. In the crystal, inversion dimers are formed via O-H?O hydrogen bonds involving the carboxyl group, so forming R(2) (2)(8) rings. These dimers are further linked via pairs of C-H?O hydrogen bonds, forming a C(6) chain propagating along the c-axis direction.

| S-EPMC3254438 | biostudies-literature

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 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.

| S-EPMC3238952 | biostudies-literature

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