Layered Uranyl Coordination Polymers Rigidly Pillared by Diphosphonates
Layered Uranyl Coordination Polymers Rigidly Pillared by Diphosphonates
复制标题
DOI：
10.1021/cg301387p
复制
发表时间：
2012-10
影响因子：
3.8
通讯作者：
P. Adelani;T. Albrecht‐Schmitt
中科院分区：
文献类型：
--
作者：
P. Adelani;T. Albrecht‐Schmitt
硝酸铀酰和1，4-苯二膦酸在一价和二价金属氢氧化物存在下的水热反应导致形成四种新的铀酰配位聚合物：Ag2{（UO2）[C6H4（PO3H）2]2}（AgUbbp），Cs{（UO2）[C6H4（PO3H0.5）2]}（CsUbbp）、[Ba（H2O）3]{（UO2）3[C6H4（PO3）2]2（O）}·5（H2O）（BaUbbp）和[Sr（H2O）3]{（UO2）2[C6H4（PO3）2]（OH）2（H2O）}·3（H2O）（SrUbbp）。AgUbbp和CsUbbp配合物由四角双锥配位几何构型的UO 6单元构成，而BaUbbp和SrUbbp配合物含有五角双锥配位环境的UO 7单元。pH和一价/二价金属阳离子对这些结构的拓扑结构具有显著影响。这些化合物在室温下由于铀酰单元的发射而发出荧光。
The hydrothermal reaction of uranyl nitrate and 1,4-benzenebisphosphonic acid in the presence of monovalent and divalent metal hydroxides results in the formation of four new uranyl coordination polymers: Ag2{(UO2)[C6H4(PO3H)2]2} (AgUbbp), Cs{(UO2)[C6H4(PO3H0.5)2]} (CsUbbp), [Ba(H2O)3]{(UO2)3[C6H4(PO3)2]2(O)}·5(H2O) (BaUbbp), and [Sr(H2O)3]{(UO2)2[C6H4(PO3)2](OH)2(H2O)}·3(H2O) (SrUbbp). AgUbbp and CsUbbp complexes are constructed from UO6 units with tetragonal bipyramidal coordination geometries, whereas BaUbbp and SrUbbp complexes contain UO7 units with pentagonal bipyramidal coordination environments. The pH and the monovalent/divalent metal cations have significant effects on the topology of these structures. These compounds fluoresce at room temperature owing to emission from the uranyl units.