【摘要】 给出了1,3-二辛氧基杯[4]芳烃冠醚-6(25,27-bis-octyloxy-calix[4]arene-26,28-crown-6,BOC6)和杯[4]芳烃双冠醚-6(1,3-alternate biscrown-6,BisC6)晶体结构参数,用NMR(CDCl3作溶剂)和XAFS(X-ray absorption finestructure)方法研究了邻硝基苯甲醚(o-nitro-phenyl methyl ether,NPME)和正辛醇(n-octyl alcohol,OA)溶液中BOC6和BisC6与碱金属离子的配位行为.结果表明:铯离子的嵌入使得杯芳冠醚分子中冠醚链的对称性明显提高;在溶液中,配合物分子中铯离子的配位数为7,7个氧的配位是一种稳定结构.更多还原

【Abstract】 In order to study the coordination chemistry of calixcrowns in solution, the single crystals of 25, 27-bis-octyloxy-calix[4]arene-26, 28-crown-6 (BOC6) and 1, 3-alternate biscrown-6(BisC6) are presented in the paper. By using NMR and XAFS, the coordination behaviors of BOC6 and BisC6 in CDC13 and NPME (o-nitro-phenyl methyl ether) or OA( n-octyl alcohol) with alkali metal ion are studied respectively. The results indicate that the symmetry of the crown ether chain is improved obviously as the cesium ion is imbedded in. The coordination number of cesium is seven and the complex structure with seven-oxygen coordination is stable in solution. One of the nitrate radical oxygen might coordinate with cesium directly.更多还原