select ad.sno,ad.journal,ad.title,ad.author_names,ad.abstract,ad.abstractlink,j.j_name,vi.* from articles_data ad left join journals j on j.journal=ad.journal left join vol_issues vi on vi.issue_id_en=ad.issue_id where ad.sno_en='26261' and ad.lang_id='5' and j.lang_id='5' and vi.lang_id='5'
ISSN: 2161-0401
Wail Al Zoubi, Farouk Kandil and Mohamad Khaled Chebani
A macrocyclic hydrazone Schiff bases were synthesized by reaction of pyridine-2,6-dicarbohydrazide and pyridine-2,6-thiodicarbohydrazide with dicarbonyls. Schiff bases have been characterized by melting point, elemental analyses, LC-MS, IR, 1 H and 13 C NMR spectral data. The Schiff base from pyridine-2,6-dicarbohydrazide and benzil has been studied by liquid–liquid extraction towards the d-metal ions (Cu(II) and Cr(III)) from aqueous phase to organic phase. The effect of chloroform and dichloromethane as organic solvents over the metal chlorides extraction was investigated at 25 ± 0.1°C by using flame atomic absorption.