Synthesis,Characterization, and Thermal Degradation of Oligo-2-[(4-Chlorophenyl) Imino Methylene] Phenol and Its Oligomer-Metal Complexes |
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Authors: | ?smet Kaya Bayram Kιzιlkaya Eyüp Özdemir |
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Affiliation: | 1. ?anakkale Onsekiz Mart University, Faculty of Sciences and Arts, Department of Chemistry , ?anakkale, Turkey kayaismet@hotmail.com;3. ?anakkale Onsekiz Mart University, Faculty of Sciences and Arts, Department of Chemistry , ?anakkale, Turkey |
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Abstract: | The oxidative polycondensation reaction conditions of 2-(4-chlorophenyl) imino methylene] phenol (CPIMP) were studied by air O2 and NaOCl oxidants at various temperatures and times. Optimum reaction conditions of air O2 and NaOCl were determined for CPIMP. Oligo-2-(4-chlorophenyl) imino methylene] phenol (OCPIMP) was synthesized from the oxidative polycondensation of CPIMP with air O2 and NaOCl in alkaline medium between 50 and 90°C. The number-average molecular weight (Mn) weight-average molecular weight (Mw) and polydispersity index (PDI) values of OCPIMP were found to be 470 g mol?1, 895 g mol?1, and 1.90, using NaOCl, and 455 g mol?1, 765 g mol?1, and 1.68, using air O2, respectively. At the optimum reaction conditions, the yield of OCPIMP was found to be 62.80% (for air O2 oxidant) and 87.50% (for NaOCl oxidant). The OCPIMP was characterized by 1H-NMR, FT-IR, UV-Vis and elemental analysis. The thermogravimetric (TGA)-DTA analyses were shown to be stable of OCPIMP and its oligomer metal complexes (such as Co+2, Ni+2, and Cu+2) against thermo-oxidative decomposition. The weight loss of OCPIMP and its oligomer metal complexes (such as Co+2, Ni+2, and Cu+2) were found to be 98%, 85%, 80%, and 82%, respectively, at 1000°C. |
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Keywords: | Oligo-2-[(4-chlorophenyl) imino methylene] phenol thermal analysis oxidative polycondensation oligomer-metal complexes |
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