Yang Xi-Ya, Wei Tao, Li Ji-Sen, Sheng Ning, Zhu Pei-Pei, Sha Jing-Quan, Wang Tong, Lan Ya-Qian
School of Pharmacy, Jiamusi University , HeilongJiang 154007, People's Republic of China.
Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Shandong 273155, People's Republic of China.
Inorg Chem. 2017 Jul 17;56(14):8311-8318. doi: 10.1021/acs.inorgchem.7b00995. Epub 2017 Jun 24.
A series of remarkable crystalline compounds containing metallapillararene/metallacalixarene metal-organic frameworks (MOFs), [Ag(pyttz)·Cl·(HO)][HSiMoO]·3HO (1), [Ag(trz)][HSiMoO] (2), [Ag(trz)][HGeMoO] (3), and [Ag(trz)][HPWO] (4) (pyttz = 3-(pyrid-4-yl)-5-(1H-1,2,4-triazol-3-yl)-1,2,4-triazolyl, trz = 1,2,4-triazole), have been obtained by using a simple one-step hydrothermal reaction of silver nitrate, pyttz for 1 and trz for 2-4, and Keggin type polyoxometalates (POMs). Crystal analysis reveals that Keggin POMs have been successfully incorporated in the windows of the metallapillararene/metallacalixarene MOFs in compounds 1-4. In addition, the Keggin silicomolybdenate-based hybrid compounds 1 and 2 were used as anode materials in lithium ion batteries (LIBs), which exhibited promising electrochemical performance with the first discharge capacities of 1344 mAh g for 1 and 1452 mAh g for 2, and this stabilized at 520 mAh g for 1 and 570 mAh g for 2 after 100 cycles at a current density of 100 mA g. The performances are better than that of (NBu)[SiMoO] matrix and commercial graphite anodes.
一系列含有金属柱芳烃/金属杯芳烃金属有机框架（MOF）的非凡晶体化合物，[Ag(pyttz)·Cl·(H₂O)][H₃SiMo₁₂O₄₀]·3H₂O (1)、[Ag(trz)₂][H₃SiMo₁₂O₄₀] (2)、[Ag(trz)₂][H₃GeMo₁₂O₄₀] (3) 和 [Ag(trz)₂][H₃PW₁₂O₄₀] (4)（pyttz = 3-(吡啶-4-基)-5-(1H-1,2,4-三唑-3-基)-1,2,4-三唑基，trz = 1,2,4-三唑），通过硝酸银、用于化合物1的pyttz以及用于化合物2 - 4的trz与凯gin型多金属氧酸盐（POM）进行简单的一步水热反应制得。晶体分析表明，凯gin POM已成功纳入化合物1 - 4中金属柱芳烃/金属杯芳烃MOF的窗口中。此外，基于硅钼酸凯gin的杂化化合物1和2被用作锂离子电池（LIB）的负极材料，其展现出有前景的电化学性能，化合物1的首次放电容量为1344 mAh g，化合物2为1452 mAh g，在100 mA g的电流密度下循环100次后，化合物1稳定在520 mAh g，化合物2稳定在570 mAh g。这些性能优于（NBu₄）[SiMo₁₂O₄₀]基体和商业石墨负极。
