2008•结构化学Requires access
A Three-dimensional Neodymium（III）- potassium（I） Coordination Polymer
Dai Dai, Yumei, Tang, Wang, Xiaoqin, Huang, Jin-Feng Jin-Feng, Lihua , Xudong
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Abstract
The title compound [NdK(btec)(H2O)2]n 1 was synthesized via the hydrothermal reaction of Zn(OAc)2·H2O,Nd(NO3)3 and KOH with 1,2,4,5-benzenetetra-carboxylic acid(H4btec),and characterized by elemental analysis and infrared spectra.The crystal of 1 crystallizes in monoclinic,space group P21/c with a = 8.9023(3),b = 7.8954(1),c = 17.6249(5),β = 91.857(1)o,V = 1238.16(6)3,Z = 4,C10H6KNdO10,Mr = 469.49,Dc = 2.519 g/cm3,F(000) = 900 and μ(MoKα) = 4.585 mm-1.The final R = 0.0404 and wR = 0.0832 for 2197 observed reflections with I > 2σ(I) and R = 0.0431 and wR = 0.0854 for all data.X-ray diffraction reveals that the btec ligand serves as a μ16-bridging ligand to link the Nd(III) and K(I) atoms into a three-dimensional coordination polymer.Photoluminescent investigation shows that the title compound displays strong emission in the blue region,which may be attributed to an intraligand emission state.