1-(4- Chloro -1-hydroxynaphthalen-2-yl)-ethanone was prepared by refluxing 4-chloronaphthalen-1-ol with glacial acetic acid in presence of fused ZnCl2. From this synthesized compound we -1- hydroxynaphthalen-2-yl)-3-(4-hydroxy phenyl)-prop-2-en-1-one from condensing -1-hydroxynaphthalen-2- yl)-ethenone, The final product 6-(5-chloro-8-hydroxynapthalene-2-yl)-4(4-hydroxyphenyl)-4-5-dihydroxypyri...

In the title hydrated mol-ecular salt, C5H7N2(+)·C7H3ClNO4(-)·H2O, the ions and water mol-ecules assemble into ribbons of R6(5)(22) rings along the c axis via O(water)-H⋯O(-), N(+)-H⋯O(water) and N-H⋯O(-) hydrogen bonds. N-H⋯O(-) hydrogen bonds connect adjacent ribbons along the c-axis direction via R4(4)(12) rings, forming hydrogen-bonded layers. The CO2 and NO2 groups make dihedral angles of ...

In the title compound, C(13)H(9)Cl(2)NO(3)S, the conformation of the N-H bond in the C-SO(2)-NH-C(O) segment is anti to the C=O bond. The mol-ecule is twisted at the S atom with a torsion angle of 67.5 (3)°. The dihedral angle between the sulfonyl benzene ring and the -SO(2)-NH-C-O segment is 79.0 (1)° and that between the sulfonyl and benzoyl benzene rings is 85.6 (1)°. In the crystal, mol-ecu...

In the crystal structure of the title compound, C(13)H(9)ClN(2)O(5)S, the N-H bond is trans to the C=O bond (H-N-C-O torsion angle = 158.4°). The dihedral angle between the two aromatic rings is 87.8 (1)°. In the crystal, mol-ecules are linked into chains along the b axis via N-H⋯O hydrogen bonds.

nano-zno was employed for the adsorption of 4c2np from aqueous solutions in batch equilibriumexperiments to investigate its adsorption properties. the quantity of 4c2np adsorbed onto nano- znosurface was measured by uv-vis spectrophotometer. the effects of contact time, adsorbent dose, ph, andinitial concentration of 4c2np were investigated. the adsorption found to be strongly influenced by all...

In the title compound, C(13)H(11)Cl(2)NO(2)S, the conformations of the N-C bonds in the C-SO(2)-NH-C segment have gauche torsions with respect to the S=O bonds. Further, the conformation of the N-H bond is syn to the ortho-methyl group in the sulfonyl benzene ring. The torsion angle of the C-SO(2)-NH-C segment in the mol-ecule is 55.0 (2)°. The two benzene rings are tilted relative to each othe...

Abbreviations: Pyrazon, 5-amino-4-chloro-2-phenyl-3 (2H) pyridazinone; o-methyl-pyrazon, 5-amino-4-chloro-2(2-methylphenyl)-3(2H)-pyridazinone; m-methyl-pyrazon, 5-aminoj4-chloro-2(3-methylphenyl) 43 (2H) -pyridazinone; p-methyl-pyrazon, 5-amino-4-chloro-2(4-methylphenyl) -3 (2H) pyridazinone. Requests for reprints should be sent to Prof. Dr. F. Lingens, Institut für Mikrobiologie und Molekular...

In the mol-ecule of the title compound, C(14)H(12)ClNO, the two benzene rings are close to coplanar [dihedral angle = 7.85 (4)°]. The amide N-C=O plane makes dihedral angles of 34.04 (4) and 39.90 (3)°, respectively, with the 4-chloro- and 2-methyl-phenyl rings. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into chains.

In the title compound, C(14)H(12)ClNO, the dihedral angle between the two aromatic rings is 11.29 (15)°. The crystal packing is stabilized by N-H⋯O hydrogen bonds linking the mol-ecules into chains running along the c axis.