Synthesis and diagnosis of a number of new super oxo compounds derived from Schiff base complexes for dual cobalt

• Main Authors: Saad El Mokhtar (Author), Tamador Mahmoud (Author), Lana Rashid (Author)
• Format: Book
• Published: College of Education for Pure Sciences, 2013-12-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.
• Notes: 1812-125X; 2664-2530; 10.33899/edusj.2013.163077
• Keywords: synthesis; super oxo compounds; schiff base complexes; dual cobalt; Education; L; Science (General); Q1-390
• Source: مجلة التربية والعلم, Vol 26, Iss 5, Pp 33-45 (2013)

<strong>ABSTRACT:</strong><br /> The work included the preparation of cobalt complexes having general formula [ CoL] , where L is divalent tetradentate Schiff base ligand derived from benzyl and anthranilic acid or o-aminophenol with 1:2 molar ratio . These complexes reacted with H₂O₂ in the absence and in the presence of B (B= py , -pic , Pph₃) at room temperature to obtain [ CoLO₂ ] and [CoLBO₂ ] complexes. All the prepared complexes were characterized by metal content analysis , molar conductance , spectral studies including I.R and electronic spectra as well as magnetic measurements. These studies revealed that all the complexes are non-electrolytes. The Schiff base ligands act as dibasic tetradentate ( NNOO-donor) , CoL complexes are square planar containing one unpaired electron. The electronic spectra reveals the oxidation of Co(II) to Co(III) in [CoLO₂] and [CoLBO₂] complexes. These complexes show μ_eff values related to one unpaired electron , that belongs to O₂ mioety , which is supported by (υ_o-o) band in I.R spectra that related to O₂ mioety. Hence superoxo compounds are realy recognized.