两个新颖的三维稀土多羧酸配位聚合物:[Ln(ox)_(0.5)(bta)_(0.5)(H_2O)_2]_n的水热合成、结构和荧光性质  

Two novel 3D polycarboxylate lanthanide coordination polymers of [Ln(ox)_(0.5)(bta)_(0.5)(H_2O)_2]_n : Synthesis, structure and fluorescence

作　　者：侯克玲[1] 白凤英[1] 邢永恒[1] 王建玲[1] 施展[2] 

机构地区：[1]辽宁师范大学化学化工学院,大连116029 [2]无机合成与制备化学国家重点实验室,吉林大学化学学院,长春130012

出　　处：《科学通报》2011年第8期560-566,共7页Chinese Science Bulletin

基　　金：国家自然科学基金(21071071);大连市教育基金(2009J21DW004);吉林大学无机合成与制备化学国家重点实验室(2010-15)资助项目

摘　　要：采用水热方法合成两种混合多羧酸稀土配位聚合物[Ln(ox)0.5(bta)0.5(H2O)2]n(Ln=Sm(1),Gd(2))(ox=草酸,bta=1,2,4,5-均苯四甲酸),并通过元素分析、红外光谱、X射线单晶衍射及X射线粉末衍射(PXRD)对配合物进行了表征.结构分析表明,配合物和属同构.混合连接体1,2,4,5-均苯四甲酸和草酸连接相应的稀土金属离子,形成复杂的三维网络结构.此外,还对配合物做了热稳定性和荧光性质的研究.Two novel lanthanide polycarboxylate coordination polymers [Ln（ox）0.5（bta）0.5（H2O）2]n, （Ln = Sm （1） and Gd （2）） （ox = oxalic acid; bta = 1,2,4,5-Benzenetetracarboxylic acid） were synthesized under hydrothermal conditions. The polymers were characterized by elemental analysis, IR spectroscopy, single crystal X-ray diffraction and powder X-ray diffraction. The structural analyses reveal that 1 and 2 are isomorphous. The corresponding lanthanide metal ions are connected by mixed-linker 1,2,4,5-benzenetetracarboxylic acid and oxalic acid, consequently, to form intricate three dimensional networks. Additional, the thermal stability and photoluminescence of I were investigated in detail.

关 键 词：稀土配合物 1  2  4  5-均苯四甲酸 水热合成 晶体结构 荧光性质 

分 类 号：O631.3[理学—高分子化学]