2-Carbamoyl-3,4,5,6-tetrafluorobenzoic acid
نویسندگان
چکیده
In the title compound, C(8)H(3)F(4)NO(3), the carb-oxy group lies nearly in the plane of the ring with a C-C-C-O torsion angle of -10.5 (4)°. The carbamoyl group is almost perpendic-ular to the benzene ring [C-C-C-O torsion angle = 82.2 (4) °]. In the crystal, molecules are linked via O-H⋯O and N-H⋯O hydrogen bonds involving the carbamoyl and carb-oxy groups.
منابع مشابه
2-Amino-3,4,5,6-tetrafluorobenzoic acid
The asymmetric unit of the title compound, C(7)H(3)F(4)NO(2), obtained as an inter-mediate in the synthesis of a coupling reagent, contains four independent and conformationally similar mol-ecules. The amine H atoms form both intra-molecular and inter-molecular N-H⋯O(carbox-yl) hydrogen bonds which, together with inter-molecular O-H⋯O(carbox-yl) hydrogen bonds and N-H⋯F associations form ribbon...
متن کامل2-[N-(2,4-Difluorophenyl)carbamoyl]-3,4,5,6-tetrafluorobenzoic acid
The title compound, C(14)H(5)F(6)NO(3), was synthesized by condensation of tetra-fluoro-phthalic anhydride and 2,4-difluoro-aniline. It was then recrystallized from hexane to give a nonmerohedral twin with two crystallographically unique mol-ecules in the asymmetric unit. The refined twin fraction is 0.460 (3). Torsional differences between the aryl rings and the central amide group account for...
متن کاملTwo hydration products of 3,4,5,6-tetrachloro-N-(methyl-2-pyridyl)phthalmic acids.
In 2-amino-6-methylpyridin-1-ium 2-carboxy-3,4,5,6-tetrachlorobenzoate, C(6)H(9)N(2)(+)·C(8)HCl(4)O(4)(-), there are two perpendicular chains of hydrogen-bonded ions, one arising from the interaction between 2-carboxy-3,4,5,6-tetrachlorobenzoate ions and the other from the interaction between the 2-amino-6-methylpyridin-1-ium and 2-carboxy-3,4,5,6-tetrachlorobenzoate ions. These chains combine ...
متن کامل2,3,4,5-Tetrafluorobenzoic acid–4,4′-bipyridine (2/1)
The asymmetric unit of the title compound, 2C(7)H(2)F(4)O(2)·C(10)H(8)N(2), contains one mol-ecule of 2,3,4,5-tetra-fluoro-benzoic acid (tfb) and half of a centrosymmetric 4,4'-bipyridine mol-ecule. Inter-molecular O-H⋯N hydrogen bonds link two tfb mol-ecules and one 4,4'-bipyridine mol-ecule into a trimer. Weak inter-molecular C-H⋯F inter-actions assemble these trimers into a three-dimensional...
متن کاملHeptaaqua(3,4,5,6-tetrachlorophthalato-κO 1)erbium(III) 2-carboxy-3,4,5,6-tetrachlorobenzoate–3,4,5,6-tetrachlorophthalic acid–water (1/1/1)
In the three-dimensional tetra-chloro-phthalate-bridged title complex [Er(C(8)Cl(4)O(4))(H(2)O)(7)](C(8)HCl(4)O(4))·C(8)H(2)Cl(4)O(4)·H(2)O, the Er(III) ion is coordinated in form of a distorted square antiprism by an O atom of a tetra-chloro-phthalate ligand and by seven water O atoms. Extensive hydrogen bonds establish a layered network structure extending parallel to (001).
متن کامل