Project description:The title compound, C(7)H(4)ClFO(2), is a twofold halogenated derivative of benzoic acid. The C-C-C angles within the aromatic moiety cover a range 116.11 (14)-123.96 (15)°, with the maximum and the minimum value next to each other. In the crystal, O-H⋯O hydrogen bonds form carb-oxy-lic acid dimers, which are further connected by C-H⋯F contacts into undulating sheets perpendicular to the a axis.
Project description:In the title compound, C7H6FNO2, the mol-ecule is almost planar (r.m.s. deviation for the non-H atoms = 0.015 Å) and an intra-molecular N-H⋯O hydrogen bond closes an S(6) ring. In the crystal, inversion dimers linked by pairs of O-H⋯O hydrogen bonds generate R2(2)(8) loops. Weak N-H⋯F hydrogen bonds, short F⋯F contacts [2.763 (2) Å] and aromatic π-π stacking inter-actions [centroid-centroid separation = 3.5570 (11) Å] are also observed in the crystal structure.
Project description: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 structures along the a axis.
Project description: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.
Project description:In the title compound, C(13)H(9)FO(3), the dihedral angle between the two benzene rings is 70.99 (5)°. In the crystal structure, mol-ecules are linked into dimers by centrosymmetric O-H⋯O inter-actions, generating R(2) (2)(8) ring motifs. These dimers are linked into a two-dimensional array, parallel to the ab plane, by two different C-H⋯O inter-actions. A weak C-H⋯π inter-actions is also present.
Project description:In the title compound, C7H4F2O3, an intra-molecular O-H?O hydrogen bond is observed. In the crystal, inversion dimers linked by pairs of O-H?O hydrogen bonds generate R 2 (2)(8) ring motifs. These dimers are linked by C-H?O and C-H?F hydrogen bonds, forming sheets lying parallel to (30-1). The sheets are linked by aromatic ?-? stacking inter-actions [inter-centroid distance = 3.7817?(9)?Å], forming a three-dimensional structure.
Project description:In the title compound, C(15)H(11)FO(3), the aromatic rings are oriented at a dihedral angle of 69.26 (3)°. In the crystal structure, inversion dimers arise from pairs of inter-molecular O-H⋯O hydrogen bonds, and C-H⋯O hydrogen bonds further consolidate the packing. There are also C-H⋯π contacts between the benzoic acid and 2-fluoro-benzene rings.
Project description:The title compound, C(15)H(11)FO(2), is an important inter-mediate in the synthesis of side-chain ligands for polymeric liquid crystals. The vinyl group is almost coplanar with both the aromatic rings. The crystal structure is stabilized by inter-molecular O-H⋯O hydrogen bonding.
Project description:In the title compound, C(14)H(10)FNO(2), the benzene rings make a dihedral angle of 57.50 (13)°, and the molecule has an E configuration about the C=N bond. In the crystal, molecules are linked via pairs of O-H⋯O hydrogen bonds, forming inversion dimers.
Project description:In the title 1:2 adduct, C(10)H(8)N(2)·2C(7)HF(5)O(2), the complete 4,4'-bipyridine mol-ecule is generated by a crystallographic twofold axis. The components of the adduct are linked by inter-molecular O-H⋯N hydrogen bonds and further connected by a combination of C-H⋯O, C-H⋯F and F⋯F [2.859 (2) Å] inter-actions.