تحضير اساس شيف من النوع N2O5 و استخدامه في الاستخلاص المذيبي لايونات الفضة والنحاس والرصاص و دراسة التاثير التآزري لاستخلاص النحاس

In this research we have synthesized a new macrocyclic Schiff base containing N2O5 donor atomes which was prepared by reaction of 1,7- bis (6- methoxy - 2 - formyl phenyl)-1,4,7,10,13-penta oxa tridecane with 4' ,4- oxy dianiline. This macrocyclic Schiff base were purified by chromatographic column filled with silicagel, elution with chloroform. Identification of this macrocyclic Schiff base compound: 1, 21- Diaza– [3, 4; 18, 19- di (6,' 6- methoxyphenyl)]- 17, 25; 27, 30- diphenyl- 5, 8, 11, 14, 17, 26-hexaoxa cyclo tricontane 1,20- diene was determined by (LC-MS), (IR), 1H NMR and 13CNMR spectroscopy. The liquid- liquid extraction of metals such as Pb (II) , Ag(I), Cu(II) from aqueous phase to organic phase which doesn' t solve in water. Then we carried out synergistic solvent extraction of copper (II) ion by using a mixture of N2O5 macrocycle Schiff base and palmitic or salicylic acid. The effect of chloroform and dichloromethane as organic solvents over the metal extractions was investigated at 25 ± 0.1°C by using atomic absorption spectrometer.