1-(2-hydroxy-4-methylphenylazo)-2-naphthol

The o,o'-dihydroxyazo dye, 1-(2-hydroxy-4-methylphenylazo)-2-naphthol (HMPAN), and its metal complexes (chromium, cobalt, and iron) having the ligand to metal ratio 2: 1 have been synthesized, but manganese forms a 1: 1 complex. The spectral characterization of HMPAN and its complexes by IR, UV-VIS, H-1 and C-13 NMR spectroscopic techniques, and elemental analyses are reported.C1 Ondokuz Mayis Univ, Dept Chem, TR-55139 Samsun, Turkey.Pamukkale Univ, Dept Chem, Denizli, Turkey

Solvent extraction of Fe3+ cation by diazo-coupling calix [4] arenes

The solvent extraction of Fe3+ cations from the aqueous to the organic (chloroform) phase was carried out using p-tert-butyl calix[4]arene((1) under bar), calix[4]arene((2) under bar), diazo-coupling calix[4]arenes [p-(4-n-butylphenylazo)calix[4]arene ((3) under bar), p-(4-phenylazophenylazo)calix[4]arene((4) under bar), p-(4-acetanilidazo)calix[4]arene((5) under bar), p-(N'-2-thyazol-2ylsulphanylazo)calix[4]arene((6) under bar) and p-(2-thyazolazo)calix[4]arene((8) under bar) and the derivatives of phenol [2-(5-bromo-2-pyridylazo)-5-diethylaminophenol((8) under bar) (Bromo-PADAP) and 2-hydroxy-5-methylphenylazonapthol((9) under bar) (HMPAN)]. It was found that the compounds ((1) under bar-(9) under bar) showed the highest extractability toward Fe3+ at pH 4.5-5.4 Compound (5) under bar shows strong binding ability to Fe3+ ion. Based on the method of continuous variation, calixarene 5 formed a 1:1 complex with Fe3+ ion

application on nylon 6 and wool

The synthesis of the dye o,o'-dihydroxyazo-HMFAN and its chromium and cobalt complexes, is described. These dyes have been applied to nylon 6 and wool fabrics. Dye exhaustion has been calculated according to the absorbances of the original and residual dyes in the dyebath. The fastness to light, washing and rubbing of the dyed fabrics have been measured. The spectral characterisation of these dyes is investigated by IR and UV/Vis spectroscopic techniques and thin-layer chromatography

Solvent extraction of Fe3+ cation by diazo-coupling calix [4] arenes

The solvent extraction of Fe3+ cations from the aqueous to the organic (chloroform) phase was carried out using p-tert-butyl calix[4]arene((1) under bar), calix[4]arene((2) under bar), diazo-coupling calix[4]arenes [p-(4-n-butylphenylazo)calix[4]arene ((3) under bar), p-(4-phenylazophenylazo)calix[4]arene((4) under bar), p-(4-acetanilidazo)calix[4]arene((5) under bar), p-(N'-2-thyazol-2ylsulphanylazo)calix[4]arene((6) under bar) and p-(2-thyazolazo)calix[4]arene((8) under bar) and the derivatives of phenol [2-(5-bromo-2-pyridylazo)-5-diethylaminophenol((8) under bar) (Bromo-PADAP) and 2-hydroxy-5-methylphenylazonapthol((9) under bar) (HMPAN)]. It was found that the compounds ((1) under bar-(9) under bar) showed the highest extractability toward Fe3+ at pH 4.5-5.4 Compound (5) under bar shows strong binding ability to Fe3+ ion. Based on the method of continuous variation, calixarene 5 formed a 1:1 complex with Fe3+ ion

application on nylon 6 and wool

The synthesis of the dye o,o'-dihydroxyazo-HMFAN and its chromium and cobalt complexes, is described. These dyes have been applied to nylon 6 and wool fabrics. Dye exhaustion has been calculated according to the absorbances of the original and residual dyes in the dyebath. The fastness to light, washing and rubbing of the dyed fabrics have been measured. The spectral characterisation of these dyes is investigated by IR and UV/Vis spectroscopic techniques and thin-layer chromatography

Synthesis of HMFAN and its chromium and cobalt complexes and their application on nylon 6 and wool

The synthesis of the. dye o,o′-dihydroxyazo-HMFAN and its chromium and cobalt complexes, is described. These dyes have been applied to nylon 6 and wool fabrics. Dye exhaustion has been calculated according to the absorbances of the original and residual dyes in the dyebath. The fastness to light, washing and rubbing of the dyed fabrics have been measured. The spectral characterisation of these dyes is investigated by IR and UV/Vis spectroscopic techniques and thin-layer chromatography

metal complexes

A series of azo-metal chelate dyes have been synthesized by coupling substituted o-nitroaniline and p-t-/s-butylphenol. The spectral characterization of the azo dyes containing o-hydroxy group and azo-metal(II) chelate [metal(II): Cu, Ni, Co] dyes by IR spectra, UV-VIS spectra, NMR spectra, elemental analysis and magnetic susceptibility techniques are reported. The stoichiometry of the azo-metal chelates was determined by the spectroscopic titration method to be 1:2 (ML2)

3-Tert-Butyl-2 '-Chloro-2-Hydroxy-5-Methylazobenzene

The crystal structure of the title compound, 6-tert-butyl-2-(2-chlorophenyldiazenyl)-4-methylphenol C17H19Cl-N2O, determined at room temperature, shows that the molecule is essentially planar, as found for other azobenzene derivatives, and features a significant intramolecular H ... N interaction of 1.75(3)Angstrom resulting in the formation of a six-membered ring.WoSScopu

3-tert-butyl-2 '-chloro-2-hydroxy-5-methylazobenzene

The crystal structure of the title compound, 6-tert-butyl-2-(2-chlorophenyldiazenyl)-4-methylphenol C17H19Cl-N2O, determined at room temperature, shows that the molecule is essentially planar, as found for other azobenzene derivatives, and features a significant intramolecular H ... N interaction of 1.75(3)Angstrom resulting in the formation of a six-membered ring