【摘要】 以聚醋酸乙烯酯（PVAc）为配体,与CoCl₂、NiCl₂、FeCl₃在四氢呋喃中进行配位反应,生成PVAc-Co（Ⅱ）、PVAc-Ni（Ⅱ）和PVAc-Fe（Ⅲ）配合物。合成反应在室温下进行,反应时间以1 h为宜。用电导率法得出PVAc-Co（Ⅱ）、PVAc-Ni（Ⅱ）配合物中金属离子与PVAc链节单元[—CH₂—CH（OCOCH₃）—]的摩尔比为1:4,而在PVAc-Fe（Ⅲ）中摩尔比可能有1:3至1:6多种。IR和PVAc-Fe（Ⅲ）配合物的XPS测试结果表明,PVAc的CH₃COO中羰基氧提供孤对电子与金属离子形成配位键。TG-DTA分析表明,形成配合物后,PVAc的高分子链的热稳定性增加。推测了产物的可能结构。更多还原

【Abstract】 Three polyvinyl acetate（PVAc） complexes with Fe（Ⅲ）, Co（Ⅱ） and Ni（Ⅱ） have been synthesized by the reaction of polyvinyl acetate, respectively, with CoCl₂, NiCl₂ and FeCl₃ in THF at room tempre- ture and one hour was appropriate for reaction. The mole ratio of metal ion to [--CH₂--CH（OCOCH₃）--] segment as found by conductivity measurement was 1:4 in complexes PVAc-Co（Ⅱ） and PVAc-Ni（Ⅱ）, but it was 1:3 to 1:6 and more in complex PVAc-Fe（Ⅲ）. IR spectra and XPS showed the complex PVAc-Fe（ Ⅲ ） is formed by non-paired electrons from oxygen atom of CH₃COO group in PVAc with metal ions. TG-DTA revealed the heat stability of complexes was higher than that of PVAc. The proposed structures of the complexes were given.更多还原