Thermal routes to metal complexed polyimines; facile conversion of CoX2(NH2CH2CH{OEt}2)2 to CoX2{=NCH2CH=}2 |
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| Affiliation: | 1. Department of Radiation Oncology, Faculty of Medicine, Erciyes University, Kayseri, Turkey;2. Zanjan Pharmaceutical Biotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran;3. Hacettepe University, Department of Chemistry, Beytepe, Ankara 06800, Turkey;4. Department of Medical Radiation Engineering, Science and Research branch, Islamic Azad University, Tehran, Iran;5. Department of Medical Laboratory, School of Paramedical Sciences, Zanjan University of Medical Sciences, Zanjan, Iran;6. Department of Biomedical Engineering, Erciyes University, Kayseri 38039, Turkey;7. ERNAM-Nanotechnology Research and Application Center, Erciyes University, Kayseri 38039, Turkey;2. Laboratory of Phytochemistry, Department of Pharmaceutical Products, Federal University of Minas Gerais – Antônio, Carlos Avenue, 6627 – Pampulha Campus, 31270-901, Belo Horizonte, Minas Gerais, Brazil;1. School of Pharmacy, Xi''an Jiaotong University, Xi''an 710061, China;2. Department of Medical Oncology, First Affiliated Hospital of Xi''an Jiaotong University, Xi''an Jiaotong University, Xi''an 710061, China;1. Department of International Oil and Gas Business, National University of Oil and Gas “Gubkin University”, Moscow, Russian Federation;2. Department of Finance Management, Plekhanov Russian University of Economics, Moscow, Russian Federation |
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| Abstract: | Cobalt(II) complexes of the form CoX2(NH2CH2CH{OEt}2)2 X=Cl, Br, I] react hydrolytically in solution to convert hemiacetal moieties to aldehydes, the latter undergoing Schiff base condensation. Complex decomposition and the separation of metal salt and organic material occur concomitantly. In contrast, thermal reactions afford metal complexed polyimines of the form CoX2{=NCH2CH=}2. Analyses are consistent with the liberation of four equivalents of ethanol per mole of CoX2(NH2CH2CH{OEt}2)2 via an autocatalytic cycle of hemiacetal hydrolysis and Schiff base condensation. Such thermal routes offer facile access to metal complexed polyimines. |
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