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3,3'-[Biphenyl-4,4'-diylbis(-oxy)]diphthalic acid.

ABSTRACT: In the title mol-ecule, C(28)H(18)O(10), the two central benzene rings form a dihedral angle of 31.0?(1)°. In the phthalic acid fragments, the carb-oxy groups in the meta positions are approximately coplanar with the attached benzene rings, being inclined to their planes at 2.7?(1) and 10.3?(1)°, while the carb-oxy groups in the ortho positions are twisted from the benzene ring planes by 83.5?(1) and 75.4?(1)°. In the crystal, O-H?O hydrogen bonds link the mol-ecules into layers parallel to the bc plane. Weak C-H?O hydrogen bonds and ?-? inter-actions between the aromatic rings [centroid-centroid distance = 3.7674?(3)?Å] further consolidate the crystal packing.

SUBMITTER: Zhao N

PROVIDER: S-EPMC3254545 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature

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3,3'-[Biphenyl-4,4'-diylbis(-oxy)]diphthalic acid.

Zhao Ningning N Li Wenjun W Chang Zhidong Z Sun Changyan C Fan Hongxia H

Acta crystallographica. Section E, Structure reports online 20111221 Pt 1

In the title mol-ecule, C(28)H(18)O(10), the two central benzene rings form a dihedral angle of 31.0 (1)°. In the phthalic acid fragments, the carb-oxy groups in the meta positions are approximately coplanar with the attached benzene rings, being inclined to their planes at 2.7 (1) and 10.3 (1)°, while the carb-oxy groups in the ortho positions are twisted from the benzene ring planes by 83.5 (1) and 75.4 (1)°. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into layers parallel to the ...[more]

PMID: 22259493

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