首页> 外文期刊>Asian Journal of Chemistry: An International Quarterly Research Journal of Chemistry >Synthesis and Characterization of Niobium and Tantalum Complexes with Bidentate Ligand and its use in Ring Opening Polymerization of e-Caprolactone
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Synthesis and Characterization of Niobium and Tantalum Complexes with Bidentate Ligand and its use in Ring Opening Polymerization of e-Caprolactone

机译:铌和钽配合物与二齿配体的合成与表征及其在E-己内酯的开环聚合中的应用

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摘要

Reaction of two equivalents of the bidentate 2,2'-PhCH[4,6-(t-Bu)2C6H2OH]2 with one equivalent of niobium pentachloride gave the complex Nb{2,2'-PhCH[4,6-(t-Bu)2C6H2O]2}2 (1) . Similar use of two equivalents of the same ligand with one equivalents tantalum pentachloride afforded Ta{2,2'-PhCH[4,6-(t-Bu)2C6H2O]2}2 (2). The molecular structure of complexes 1 and 2 have been characterized by IR and ~1H NMR. Both complexes were investigated as catalysts for polymerization of cyclic esters (E-caprolactone) with no solvent at various time at 110 °C. In all cases the polymer produced was of high yield percent.
机译:二齿2,2'-phch [4,6-(t-bu)2c6H 2 OH] 2的两当量的反应,其中相当于氯化铌,得到了复合Nb {2,2'-phch [4,6-(t -BU)2C6H2O] 2} 2(1)。 与两当量相同的配体类似用途,其等当量钽五氯化物得到TA {2,2'-PHCH [4,6-(T-BU)2C6H2O] 2} 2(2)。 复合物1和2的分子结构已经表征了IR和〜1H NMR。 在110℃下,将两种复合物作为用于聚合环状酯(E-己内酯)的催化剂,在不同时间下没有溶剂。 在所有情况下,产生的聚合物具有高产率百分比。

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