Zhang Bo, Feng Mei-Ling, Cui Hong-Hua, Du Cheng-Feng, Qi Xing-Hui, Shen Nan-Nan, Huang Xiao-Ying
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China.
University of Chinese Academy of Sciences , Beijing, 100049, P. R. China.
Inorg Chem. 2015 Sep 8;54(17):8474-81. doi: 10.1021/acs.inorgchem.5b01181. Epub 2015 Aug 20.
Among numerous heterometallic chalcogenidoantimonates, relatively a few amine-directed Ge-Sb-S compounds have been synthesized. Presented here are the solvothermal syntheses, crystal structures, and ion-exchange, optical, and photocatalytic properties of two novel amine-directed Ge-Sb-S compounds, namely, [CH3NH3]20Ge10Sb28S72·7H2O (1) and [(CH3CH2CH2)2NH2]3Ge3Sb5S15·0.5(C2H5OH) (2). The structure of 1 features an unprecedented two-dimensional Ge-Sb-S double-layer composed of two twofold rotational symmetry-related thick [Ge8Sb28S72]n(28n-) single layers adhered via vertex-sharing [GeS4] tetrahedra. Compound 2 features a unique [Ge3Sb5S15]n(3n-) slab perforated with large elliptic-like windows. Remarkably, compound 1 exhibited excellent Cs(+) ion-exchange property despite the presence of excess competitive cations, such as Na(+), K(+), Mg(2+), and Ca(2+) ions. In addition, compound 1 displayed visible-light-driven photocatalytic activity for degradation of rhodamine B.
在众多异金属硫属锑酸盐中，相对较少的胺导向的锗 - 锑 - 硫化合物已被合成。本文介绍了两种新型胺导向的锗 - 锑 - 硫化合物，即[CH₃NH₃]₂₀Ge₁₀Sb₂₈S₇₂·7H₂O（1）和[(CH₃CH₂CH₂)₂NH₂]₃Ge₃Sb₅S₁₅·0.5(C₂H₅OH)（2）的溶剂热合成、晶体结构、离子交换、光学和光催化性能。化合物1的结构具有前所未有的二维锗 - 锑 - 硫双层，由两个通过顶点共享[GeS₄]四面体连接的具有二次旋转对称性的厚[Ge₈Sb₂₈S₇₂]ⁿ(28n⁻)单层组成。化合物2具有独特的[Ge₃Sb₅S₁₅]ⁿ(3n⁻)板层，其上有大的椭圆形窗口。值得注意的是，尽管存在过量的竞争性阳离子，如Na⁺、K⁺、Mg²⁺和Ca²⁺离子，化合物1仍表现出优异的Cs⁺离子交换性能。此外，化合物1对罗丹明B的降解表现出可见光驱动的光催化活性。
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