A rare polyoxometalate based on mixed niobium-based polyoxoanions [GeNb18O54](14-) and [Nb3W3O19](5-)

作者：Liu, Bing-Xin; Cai, Zhen-Wen; Yang, Tao; Li, Xin-Xiong; Yang, Guo-Yu^*; Zheng, Shou-Tian^*

来源：Inorganic Chemistry Communications, 2017, 78: 56-60.

DOI：10.1016/j.inoche.2017.02.014

• Polyoxometalates
• Hydrothermal synthesis
• Mixed clusters
• Proton-conducting

Polyoxoniobate [GeNb18O54](14-) and polyniobotungstate [Nb3W3O19](5-) are firstly found to co-crystallize at the same crystal to form a rare organic-inorganic hybrid polyoxometalate H[Cu(en)(2)(H2O)](8)[Cu(en)(2) (H2O)(2)](2){K-4[Cu(en)(2)](2)[Cu(en)(2)(GeNb18O54)](2)}Nb3W3O19]center dot 32H(2)O (1). Interestingly, in 1, the crescent-shaped polyoxoanions [GeNb18O54](14-) can form dimeric secondary building units (SBUs) {[GeNb18O54](2)[K-2(H2O)(5)](2)} via the linkage of K+ cations. These dimeric SBUs can be further bridged by copper complexes to generate 1D infinite double strand chains with completely different isolated polyoxoanions [Nb3W3O19](5-) filling the gaps between chains.

• 出版日期2017-4
• 单位北京理工大学; 中国科学院福建物质结构研究所; 结构化学国家重点实验室; 福州大学