Project description:In the title compound, C(21)H(18)O(4), the outer benzyl rings are disordered over two resolved positions in a 0.50 ratio. The O-CH(2) groups form dihedral angles of 4.1 (2) and 10.9 (4)° with the central benzene ring, adopting a syn-anti conformation with respect to this ring. In the crystal, the mol-ecules are linked by O-H⋯O hydrogen bonds and weak C-H⋯O inter-actions, forming chains along [010].
Project description:In the crystal structure of the title compound, C(14)H(12)O(3), mol-ecules are linked via inter-molecular O-H⋯O hydrogen bonds, resulting in dimer formation. The dihedral angle between the two phenyl rings is 76.2 (2)°.
Project description:The title compound, C(17)H(16)O(5), is an important inter-mediate for the synthesis of side-chain ligands for polymeric liquid crystals. The prop-oxy and benzoic acid groups subtend dihedral angles of 4.36 (6) and 55.35 (6)°, respectively, with the central benzo-yloxy unit. The crystal structure is stabilized by an inter-molecular O-H⋯O hydrogen bond.
Project description:In the crystal structure of the title compound, C(14)H(12)O(3), the mol-ecules form classical O-H⋯O hydrogen-bonded carb-oxy-lic acid dimers. The dihedral angle between the two rings is 80.9 (3)°.
Project description:The title compound, C(22)H(26)O(5), is an important inter-mediate for the synthesis of side-chain ligands for polymeric liquid crystals. The octyl group is coplanar with the central C(6)O moiety, where the maximum deviation of a C atom in the octyl group from the C(6)O plane is 0.161 (5) Å. The crystal structure is stabilized by inter-molecular O-H⋯O hydrogen bonds.
Project description:The mol-ecule of the title compound, C(10)H(9)NO(5), is approximately planar, with the mean planes of the nitro, carboxyl and all-yloxy groups rotated by 8.1 (3), 7.9 (3) and 4.52 (18)°, respectively, from the plane of the benzene ring. Bond lengths in the aromatic ring are influenced by both electronic effects and strain induced by ortho-substitution. In the crystal structure, centrosymmetrically related mol-ecules are paired into dimers through strong O-H⋯O hydrogen bonds.
Project description:In the title compound, C(12)H(15)NO(4), the butyric acid group has a stretched trans conformation. The dihedral angle between the phenyl ring and the oxycarb-oxy-amino N-(C=O)-O-C plane is 56.6 (2)°. In the crystal, an inversion dimer is formed by a pair of O-H⋯O hydrogen bonds. The dimers are further linked by N-H⋯O hydrogen bonds between amide groups, forming a tape along the b axis.
Project description:The title compound, C16H14N2O3, has an E conformation about the azo-benzene [-N=N- = 1.2481 (16) Å] linkage. The benzene rings are almost coplanar [dihedral angle = 1.36 (7)°]. The O atoms of the carb-oxy-lic acid group are disordered over two sets of sites and were refined with an occupancy ratio of 0.5:0.5. The two disordered components of the carb-oxy-lic acid group make dihedral angles of 1.5 (14) and 3.8 (12)° with the benzene ring to which they are attached. In the crystal, mol-ecules are linked via pairs of O-H⋯O hydrogen bonds, forming inversion dimers. The dimers are connected via C-H⋯O hydrogen bonds, forming ribbons lying parallel to [120]. These ribbons are linked via C-H⋯π inter-actions, forming slabs parallel to (001).
Project description:In the crystal of the title vanilline derivative, 2C15H15NO4·H2O, the secondary amine mol-ecule is accompanied by half equivalent of water. The mol-ecule is non-planar, with torsion angle Car-yl-CH2-NH-Car-yl of -83.9 (2)°. In the crystal, the system of O-H⋯O hydrogen bonds, including bridging water mol-ecules residing on crystallographic twofold axes, results in a two-dimensional layered structure. Within the layers, there are also weak N-H⋯π inter-actions involving the vanilline benzene ring.
Project description:The title compound, C(14)H(12)O(2), has an essentially planar conformation with the two aromatic rings forming a dihedral angle of 5.23 (9)° and the aldehyde group lying in the plane of its aromatic group [maximum deviation = 0.204 (3) Å]. Weak inter-molecular C-H⋯O contacts are found to be shortest between the aldehyde O-atom acceptor and the H atoms of the methyl-ene group.