A new host 3D copper(I/II)-pyrazinecarboxylate framework intercalated with Keggin polyoxotungstates

作者：Sun, Xianfeng; You, Wansheng^*; Cheng, Hongwei; Zhang, Fan; Meng, Bifang; Zhang, Lancui

来源：Inorganica Chimica Acta, 2011, 373(1): 137-141.

DOI：10.1016/j.ica.2011.04.006

• Polyoxotungstate
• Cu(I/II) coordination polymer
• Pyrazinecarboxylate
• Photocatalytic hydrogen production

Two new Cu(I/II) coordination polymers based on alpha-Keggin polyoxotungstates, [Cu-6(2-pzc)(5)(H2O)(2) (XW12O40)]center dot H2O (X = Si, 1; Ge, 2) (2-pzc = 2-pyrazinecarboxylate), have been synthesized hydrothermally and characterized structurally. Single crystal structure analysis reveals that they are isomorphic, and exhibit a novel 3D framework constructed from Cu(I/II) ions and 2-pzc ligands, in which there exist nano-sized channels viewed along the a axis and the c axis. The [XW12O40](4) anions are filled in the channels, acting as not only a template, but also a hexa-dentate ligand. Additionally, the photocatalytic hydrogen production of 1 and 2 was investigated. It is found that 1 and 2, as heterogeneous catalysts, exhibit the photocatalytic activity in the UV region.

• 出版日期2011-7-15
• 单位辽宁师范大学