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3-(4-Methoxy-phen-yl)pent-2-ene-1,5-dioic acid.

ABSTRACT: In the title compound, C(12)H(12)O(5), mol-ecules are linked into anti-parallel hydrogen-bonded sheets through inversion dimers generated via two O-H⋯O hydrogen bonds. Using the R(2) (2)(8) motif as a building block, hydrogen-bonded chains of a C(2) (2)(8) superstructure are then generated.

SUBMITTER: Das U

PROVIDER: S-EPMC2959923 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1,5-Bis(penta-fluoro-phen-yl)-3-phenyl-pent-2-ene-1,5-dione.

Project description:In the title compound, C(23)H(8)F(10)O(2), the three arene rings are twisted one with respect to the other: the two perfluorinated arene rings are tilted to each other by an angle of 60.39?(7)°. They are inclined to the non-fluorinated phenyl unit by 38.85?(7) and 78.74?(7)°. The olefinic double bond adopts an E configuration. The carbonyl groups are not in a coplanar alignment with reference to the neighbouring arene rings. The crystal packing features a number of weak C-H?F inter-actions, which leads to the formation of a three-dimensional network.

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1-[5-(3-Chloro-phen-yl)-2-methyl-3-thi-en-yl]-3,3,4,4,5,5-hexa-fluoro-2-(2-methoxy-phen-yl)-cyclo-pent-1-ene.

Project description:The title compound, C(23)H(15)ClF(6)OS, has thienyl and phenyl-ene substituents on the double-bond C atoms of the envelope-shaped cyclo-pentenyl ring. The aromatic systems are aligned at 55.3?(4) (thien-yl) and 60.8?(7)° (phenyl-ene) with respect to the planar C-C=C-C portion of the main central cyclo-pentenyl ring.

| S-EPMC2977783 | biostudies-literature

3-(3-Bromo-4-methoxy-phen-yl)-1,5-diphenyl-pentane-1,5-dione.

Project description:In the title compound, C(24)H(21)BrO(3), the central bromo-methoxy-benzene ring forms dihedral angles of 63.6?(1) and 60.3?(1)° with the terminal phenyl rings, while the angle between the two phenyl rings is 25.8?(1)°. The crystal structure is stabilized by weak C-H?Br and C-H?O hydrogen bonds, and C-H?? and ?-? stacking [centroid-centroid distance = 3.910?(3)?Å] inter-actions.

| S-EPMC2984057 | biostudies-literature

N'-[(1E)-(3,5-Dichloro-2-hydroxy-phen-yl)(phen-yl)methyl-ene]-4-methoxy-benzohydrazide.

Project description:The title compound, C(21)H(15)Cl(2)N(2)O(3), displays a trans configuration with respect to the C=N double bond. The mol-ecular conformation is stabilized by an intra-molecular O-H?N hydrogen bond.

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4-(2-Hy-droxy-phen-yl)-3,5-di-thia-hepta-ne-dioic acid.

Project description:In the crystal of the title compound, C11H12O5S2, mol-ecules are linked by O-H?O hydrogen bonds and C-H?O inter-actions, forming a three-dimensional network.

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Ethyl 6-(4-chloro-phen-yl)-4-(4-methoxy-phen-yl)-2-oxocyclo-hex-3-ene-1-carboxyl-ate.

Project description:In the title compound, C(22)H(21)ClO(4), the cyclo-hex-3-ene unit adopts an envelope conformation in both independent mol-ecules comprising the asymmetric unit. The two benzene rings are inclined to each other at a dihedral angle of 82.03?(5)° [86.37?(5)°]. In the crystal, the molecules interact via C-H?O, C-H?Cl and C-H?? interactions.

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(E)-2,3-Bis(4-methoxy-phen-yl)acrylic acid.

Project description:In the title mol-ecule, C(17)H(16)O(4), the angle between the aromatic ring planes is 69.1?(6)°. The crystal structure is stabilized by inter-molecular O-H?O hydrogen bonds; mol-ecules related by a centre of symmetry are linked to form inversion dimers.

| S-EPMC2977645 | biostudies-literature

4-{2-[5-(3,5-Difluoro-phen-yl)-2-methyl-thio-phen-3-yl]-3,3,4,4,5,5-hexa-fluoro-cyclo-pent-1-en-1-yl}-1,5-dimethyl-pyrrole-2-carbonitrile.

Project description:In the title compound, C(23)H(14)F(8)N(2)S, the dihedral angles between the pyrrole and thio-phene groups and the almost planar C-C=C-C unit of the cyclo-pentene ring (r.m.s. deviation = 0.4193?Å) are 43.6?(5) and 50.1?(2)°, respectively. The distance of 3.612?(3)?Å between the potentially reactive C atoms of the two heteroaryl substituents is short enough to enable a photocyclization reaction.

| S-EPMC3099757 | biostudies-literature

2-(1,2-Dimethyl-1H-indol-3-yl)-1-{5-[3-(1,3-dioxolan-2-yl)phen-yl]-2-methyl-thio-phen-3-yl}-3,3,4,4,5,5-hexa-fluoro-cyclo-pent-1-ene.

Project description:The title compound, C(29)H(23)F(6)NO(2)S, a member of a new family of photochromic diaryl-ethene compounds having an unsymmetrically substituted hexa-fluoro-cyclo-pentene unit, displays dihedral angles between the indole and thio-phene rings of 52.5?(4)°, and between the indole ring and the planar C-C=C-C unit of the cyclopentene ring of 53.8?(6)°. The distance between the potentially reactive C atoms from the two heteroaryl substituents of 3.817?(6)?Å is proven to be short enough for photocyclization to occur.

| S-EPMC3247444 | biostudies-literature

1,5-Bis(4-chloro-phen-yl)-3-(4-methyl-phen-yl)pentane-1,5-dione.

Project description:In the title mol-ecule, C24H20Cl2O2, the central methyl-benzene ring forms dihedral angles of 42.47?(10) and 34.34?(10)° with the terminal 4-chloro-phenyl fragments. The dihedral angle between the chloro-benzene rings is 34.45?(11)°. A weak intra-molecular C-H?O inter-action generates an S(6) ring motif. The crystal packing exhibits weak C-H?O hydrogen bonds and C-H?? inter-actions.

| S-EPMC3790380 | biostudies-literature

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