ABSTRACT. The present study is aimed to synthesise Schiff bases from sulfathiazole/ sulfamethoxazole/ sulfadimidine with 2-hydroxybenzaldehyde. synthesized were characterized by analytical data, IR, 1H-NMR, 13C-NMR, UV-Vis spectra, mass spectra and screened for antibacterial activity against gram positive bacteria Staphylococcus aureus negative Salmonella typhiand antifungal Candida albicans Mu...

A new proton transfer compound, formulated as (Hamp-6-pic)(Hpyzd) ∙H2O (1), has been synthesized from the reaction of pyrazine-2,3-dicarboxylic acid (H2pyzd)  and 2-amino-6-methyl pyridine (amp-6-pic), in 1:1 molar ratio. Extensive O−H×××O, N−H×××N and O−H×××O hydrogen bonds involving (Hamp-6-pic)+ cation, (Hpyzd)- anion and co-crystal water molecule٫ static electronic٫ and π…π stacking interac...

In the title compound, C12H10BrClN2O2S, the sulfonamide group adopts a staggered conformation about the N-S bond [the C-S-N-H torsion angle is 97 (3)°] with the N-atom lone pair bis-ecting the O=S=O angle. For the C(Ar)-S bond, the ortho-substituted C atom bis-ects one of O=S-N angles [the C-C-S-N torsion angle is -57.7 (3)°]. The mean planes of the aromatic rings form a dihedral angle of 75.1 ...

In the title compound, C(14)H(12)N(4)O(3), the dihedral angle between the benzene rings is 7.6 (4)°. In the crystal, infinite sheets linked by N-H⋯O and bifurcated N-H⋯(O,N) hydrogen bonds propagate in the (10-1) plane, in which R(4) (4)(36) loops are apparent. Neighbouring layers may inter-act by way of very weak π-π stacking inter-actions [centroid-centroid distances = 3.9329 (13) and 4.0702 ...