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)°.

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.

In the title compound, C(13)H(10)BrNO(4)S, the dihedral angle between the benzene rings is 82.75 (15)°. An intra-molecular N-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal structure, two mol-ecules form an R(2) (2)(8) centrosymmetric dimer through a pair of O-H⋯O hydrogen bonds. Intra- and inter-molecular C-H⋯O hydrogen bonds are also observed.

In the title compound, C(12)H(17)N(2)O(5)P, the phospho-nate group is almost orthogonal to both the ethyl groups, with a dihedral angle of 83.75 (11)°. In the crystal, mol-ecules are linked into centrosymmetric dimers via pairs of O-H⋯O hydrogen bonds with an R(2) (2)(20) graph-set motif. The crystal structure is further consolidated by weak C-H⋯π inter-actions.

In the title mol-ecule, C(12)H(9)NO(2)S, the dihedral angle between benzene and thio-phene rings is 41.91 (8)°. The crystal packing exhibits short inter-molecular O-H⋯O and C-H⋯O hydrogen-bonding contacts.

In the title mol-ecule, C(17)H(12)O(2), the dihedral angle between the mean plane of the benzene ring and that of the naphthalene ring system is 49.09 (6)°. In the crystal structure, mol-ecules are linked to form centrosymmetric dimers via inter-molecular O-H⋯O hydrogen bonds. The hydr-oxy H atom is disordered over two sites with refined occupancies of 0.62 (3) and 0.38 (3).

The Nickel(II) and Copper(II) complexes of Uramido Benzoic acid were prepared and characterized by magnetic studies, molar conductance studies, thermal analysis and spectroscopic techniques (FTIR, UV and ESR). The IR spectral studies revealed that the Uramido Benzoic acid behaves as a tridentate ligand. Electronic spectral studies and magnetic studies suggest that the complexes are in octahedra...