Poly(ethylene terephthalate) synthesis catalysed by chelated Sn,Zn and Mg complexes |
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| Authors: | Petr ?vec Petra Hubená Zdeňka R??i?ková Jana Holubová Miloslav Pouzar Jan Merna Ale? R??i?ka |
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| Institution: | 1. Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic;2. Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic;3. Department of Polymers, Faculty of Chemical Technology, Institute of Chemical Technology, Prague 6, Czech Republic |
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| Abstract: | A series of four C,N‐chelated diorganotin(IV) compounds, namely (LCN)2Sn(OCH2CH2O) ( 1 ), LCNBuSn(OCH2CH2O)]2 ( 2 ), (LCN)2Sn(1,2‐(O)2‐3,5‐tBu2C6H2) ( 3 ) and LCNBuSn(1,2‐(O)2‐3,5‐tBu2C6H2)]2 ( 4 ) (LCN = 2‐(Me2NCH2)C6H4), one zinc species, namely LNOZnEt ( 5 ) (LNO = 2‐(MeO)C6H4]NC(Me)?C(H)C(Me)?O), and one magnesium complex, namely LNNMg]6 ( 6 ), (LNN = 2‐(Me2NCH2)C6H4]N), were used as catalysts for the synthesis of poly(ethylene terephthalate) (PET) from dimethyl terephthalate and ethylene glycol. Prepared PET samples were primarily characterized using the size exclusion chromatography technique. The highest number‐average molar mass of prepared PET samples reached 10.7 kg mol?1. Novel dimeric compound 2 was structurally characterized using both multinuclear NMR spectroscopy and X‐ray diffraction analysis. In addition, an alternative synthesis of 1 is described. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | organotin(IV) and organozinc compounds magnesium complex chelating ligand catalysis poly(ethylene terephthalate) |
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