以草酸、碳酸根构筑的一个钕(Ⅲ)配位聚合物的晶体结构和荧光性质(英文)

A Neodymium(Ⅲ) Coordination Polymer Based on Oxalate and Carbonate Ligands:Synthesis,Structure and Luminescence

水热条件下采用Nd2(CO3)3和草酸钠作为反应物合成出一个新的三维钕(Ⅲ)配位聚合物{[Nd2(ox)(cb)2(H2O)2]·3H2O}n(1)(ox=草酸,cb=碳酸),并分别用元素分析、红外光谱、差热分析、X-射线粉末衍射和X-射线单晶衍射等表征了该结构。晶体结构分析结果表明:μ2桥联的草酸根离子与μ4桥联的碳酸根离子将钕离子连接成三维微孔结构,沿b轴和c轴方向分别具有孔径大小为0.53 nm×0.41 nm和0.59 nm×0.84 nm的通道。拓扑分析结果表明化合物1为(4,5)连接类型。荧光分析表明常温固态下配合物1发射近红外荧光。

A neodymium（Ⅲ） coordination polymer, namely, {[Nd2（ox）（cb）2（H2O）2]·3H2O} （1） （ox=oxalate, cb=carbonate） （1）, has been hydrothermally synthesized and characterized by elemental analysis, IR, TGA, powder X-ray diffraction, and single-crystal X-ray diffraction. Structural determination reveals that the neodymium ions are bridged by μ2-ox and μ4-cb ligands to give a 3D framework including 2D channels of 0.53 nm×0.41 nm along the b axis and 0.59 nm×0.84 nm along the c axis, respectively. It can also be described as a （4,5）-connected {44.62} {44.66} topological 3D framework. Solid-state 1 emits the intensely NIR characteristic luminescence of Nd3＋ ion at room temperature. CCDC： 917863.