منابع مشابه
3,5-Dibromo-2-hydroxybenzoic acid
The title compound, C(7)H(4)Br(2)O(3), has an intra-molecular O-H⋯O=C hydrogen bond and aggregates to form hydrogen-bonded dimers via O-H⋯O inter-actions. The formation of zigzag one-dimensional mol-ecular tapes via C-H⋯Br inter-actions and π-π stacking inter-actions (inter-planar separation = 3.42 Å) completes the crystal structure.
متن کاملEnergetics of hydroxybenzoic acids and of the corresponding carboxyphenoxyl radicals. Intramolecular hydrogen bonding in 2-hydroxybenzoic acid.
The energetics of the phenolic O-H bond in the three hydroxybenzoic acid isomers and of the intramolecular hydrogen O-H- - -O-C bond in 2-hydroxybenzoic acid, 2-OHBA, were investigated by using a combination of experimental and theoretical methods. The standard molar enthalpies of formation of monoclinic 3- and 4-hydroxybenzoic acids, at 298.15 K, were determined as Delta(f)(3-OHBA, cr) = -593....
متن کامل4,4′-Dibromo-2-nitrobiphenyl
The title compound, C(12)H(7)Br(2)NO(2), a biphenyl derivative, displays a twisted conformation with the two benzene rings making a dihedral angle of 55.34 (14)°. The dihedral angle between the nitro group and its parent benzene ring is 26.8 (2)°. The crystal structure is stabilized by inter-molecular C-H⋯Br and C-H⋯O inter-actions, which lead to the formation of chains propagating along the c-...
متن کامل2,3-Dibromo-3-phenylpropionic acid
In the crystal of the title compound, C(9)H(8)Br(2)O(2), inversion dimers linked by two O-H⋯O hydrogen bonds occur. All of the carbon and oxygen atoms are disordered over two sets of sites in a 2:1 ratio.
متن کاملHydroxybenzoic acid isomers and the cardiovascular system
Today we are beginning to understand how phytochemicals can influence metabolism, cellular signaling and gene expression. The hydroxybenzoic acids are related to salicylic acid and salicin, the first compounds isolated that have a pharmacological activity. In this review we examine how a number of hydroxyphenolics have the potential to ameliorate cardiovascular problems related to aging such as...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2007
ISSN: 1600-5368
DOI: 10.1107/s1600536807062320