【作者】 李玉峰；

【Author】 Li Yufeng;College of Chemistry,Beijing Normal University;

【机构】 北京师范大学；

【摘要】 超分子膦酸化合物在核酸和生物分子中有重要作用,但在晶体工程及超分子化学领域报道较少,它们由氢键形成的层状及网状结构在高性能先进材料领域具有广泛的应用前景。我们在酸性条件下采用Wittig试剂与磷酸酯反应得到1,4-二乙基苯基膦酸酯（H₂[BBPE],1）。作为合成子1与不同的Lewis-base反应得到产物2-4。晶体结构表明,在化合物1中存在由氢键形成的一维管状通道,化合物2中,氢键形成的两条一维链状形成左手螺旋与右手螺旋的3D超分子网状结构。化合物4中有两个不同的Na原子配位结构。另外,这四个化合物在室温下固态及溶剂中的荧光性质与它们的结构有关。更多还原

【Abstract】 By treating a suitable Wittig reagent under acid conditions,the phosphonate ester 1,4-bimethylenebenzene phosphonate ethyl ester（H₂[BBPE],1） was obtained.As a building block,compound 1 has been reacted with the Lewis-base N,N-dimethylpiperazine,ammonia and NaOH yielded compounds 2-4.The crystal structures show that a 1D chain forming a tubular channel is constructed through hydrogen bonds in 1;hydrogen bonds form two 1D chains with left-hand and right-hand helixes and form 3D networks in compound 2;1D hydrogen-bond chains are further connected together to afford a 3D network architecture in compound 3;the phosphonate is coordinated by two Na atoms which present different coordination environments in compound 4.Additionally,the relationships between the structure and fluorescence of the four compounds in the solid state and in different solvents have also been studied at room temperature.更多还原