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2-(4-Bromo-phen-yl)-2-oxoethyl 4-hy-droxy-benzoate.

ABSTRACT: In the title compound, C(15)H(11)BrO(4), the dihedral angle between the aromatic rings is 66.77?(8)°. In the crystal, O-H?O, C-H?Br and C-H?O hydrogen bonds link the mol-ecules, forming layers lying parallel to (101). The crystal packing is further consolidated by C-H?? inter-actions and ?-? stacking inter-actions [centroid-centroid distance = 3.5476?(7)?Å].

SUBMITTER: Fun HK

PROVIDER: S-EPMC3247591 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature

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2-(4-Bromo-phen-yl)-2-oxoethyl 4-hy-droxy-benzoate.

Fun Hoong-Kun HK Loh Wan-Sin WS Garudachari B B Isloor Arun M AM Satyanarayana M N MN

Acta crystallographica. Section E, Structure reports online 20111005 Pt 11

In the title compound, C(15)H(11)BrO(4), the dihedral angle between the aromatic rings is 66.77 (8)°. In the crystal, O-H⋯O, C-H⋯Br and C-H⋯O hydrogen bonds link the mol-ecules, forming layers lying parallel to (101). The crystal packing is further consolidated by C-H⋯π inter-actions and π-π stacking inter-actions [centroid-centroid distance = 3.5476 (7) Å]. ...[more]

PMID: 22219896

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2-(4-Chloro-phen-yl)-2-oxoethyl 4-hy-droxy-benzoate.

Project description:The title compound, C(15)H(11)ClO(4), consists of a chloro-benzene ring and a phenol ring which are linked together by a 1,4-dioxo-2-oxabutane-1,4-diyl group. The dihedral angle between the chloro-benzene and phenol rings is 65.70?(11)°. In the crystal, inter-molecular O-H?O hydrogen bonds link the mol-ecules into chains along [010].

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2-(4-Bromo-phen-yl)-2-oxoethyl 4-bromo-benzoate.

Project description:The asymmetric unit of the title compound, C(15)H(10)Br(2)O(3), consists of three crystallographically independent mol-ecules (A, B and C). The phenyl rings in mol-ecules A, B and C make dihedral angles of 6.1?(3), 3.2?(2) and 54.6?(2)° to each other, respectively. In the crystal, mol-ecules are linked into two-dimensional layers parallel to the ab plane by inter-molecular C-H?O hydrogen bonds. The crystal structure is further stabilized by C-H?? inter-actions. The studied crystal is an inversion twin, the refined ratio of the twin components being 0.128?(8):0.872?(8).

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2-(4-Methyl-phen-yl)-2-oxoethyl 3-bromo-benzoate.

Project description:The mol-ecule of the title compound, C16H13BrO3, is built of two approximately planar fragments, viz. 3-bromo-benzoate [maximum deviation = 0.055?(2)?Å and 2-oxo-2-p-tolyl-ethyl [maximum deviation = 0.042?(2)?Å], inclined by 46.51?(7)°. In the crystal, weak C-H?O hydrogen bonds and Br?Br contacts [3.6491?(7)?Å] connect the mol-ecules into infinite layers parallel to (-221).

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Project description:In the title compound, C(16)H(13)BrO(4), the benzene rings are almost perpendicular to each other, making a dihedral angle of 84.07?(8)°. In the crystal, the mol-ecules are linked into chains along the a axis via inter-molecular C-H?O hydrogen bonds. A C-H?? inter-action is also observed.

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Crystal structure of 2-(4-chloro-phen-yl)-2-oxoethyl 3-bromo-benzoate.

Project description:2-(4-Chloro-phen-yl)-2-oxoethyl 3-bromo-benzoate, C15H10BrClO3, was synthesized in a single-step reaction by condensation of 3-bromo-benzoic acid with 2-bromo-1-(4-chloro-phen-yl)ethanone in di-methyl-formamide in the presence of tri-ethyl-amine as a catalyst. The structure consists of an aryl ketone moiety linked to an aryl ester unit by a methyl-ene group. Both units are reasonably planar (r.m.s. deviations of 0.119 and 0.010?Å for the aryl ketone and aryl ester units, respectively) and are almost orthogonal, with an angle of 88.60?(3)° between them. In the crystal, mol-ecules form five separate sets of inversion dimers. Three of these are generated by two C-H?O inter-actions and a C-H?Br contact, and form chains along c and along the ab cell diagonal. In addition, two inversion-related ?-? stacking inter-actions between like aryl rings again form chains of mol-ecules but in this instance along the bc diagonal. These contacts generate infinite layers of mol-ecules parallel to (011) and stack the mol-ecules along the a-axis direction.

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Methyl 5-bromo-2-hy-droxy-benzoate.

Project description:The title compound, C(8)H(7)BrO(3), is almost planar (r.m.s. deviation for the non-H atoms = 0.055?Å). In the crystal, O-H?O hydrogen bonds link the mol-ecules into C(6) chains propagating in [010]. Very weak aromatic ?-? inter-actions [centroid-centroid distances = 3.984?(5) and 3.982?(5)?Å] also occur.

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2-(4-Bromo-phen-yl)-2-oxoethyl 2-methyl-benzoate.

Project description:In the title compound, C(16)H(13)BrO(3), the dihedral angle formed between the bromo- and methyl-substituted benzene rings is 66.66?(8)°. In the crystal, mol-ecules are linked by inter-molecular C-H?O hydrogen bonds, forming a two-dimensional network parallel to the ac plane. The crystal packing is further consolidated by C-H?? inter-actions.

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2-(4-Bromo-phen-yl)-2-oxoethyl 4-chloro-benzoate.

Project description:The asymmetric unit of the title compound, C(15)H(10)BrClO(3), consists of three crystallographically independent mol-ecules. The dihedral angles between the benzene rings in the three mol-ecules are 68.8?(2), 0.7?(3) and 66.1?(2)°. In the crystal, the three independent mol-ecules are inter-connected by C-H?O hydrogen bonds, leading to isolated trimers.

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2-(4-Bromo-phen-yl)-2-oxoethyl 4-methyl-benzoate.

Project description:The title compound, C(16)H(13)BrO(3), consists of a toluene ring and a bromo-benzene ring which are linked together by a 2-oxopropyl acetate group. The dihedral angle formed between the toluene and bromo-benzene rings is 80.70?(7)°. In the crystal, inter-molecular C-H?O hydrogen bonds link the mol-ecules into a three-dimensional network.

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