State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, PR China.
Dalton Trans. 2012 Oct 21;41(39):12170-4. doi: 10.1039/c2dt31185b.
A series of zeolitic alumino- and gallogermanate compounds, |M(II)(en)(3)|[M(III)(2)Ge(4)O(12)] (M(II) = Ni, Co, Zn; M(III) = Al, Ga; en = ethylenediamine), has been synthesized using in situ formed M(II)(en)(3) cations as the structure-directing agents. These zeolitic compounds exhibit the same JST framework topology which is built exclusively of 3-rings. Their structures were determined by single-crystal X-ray diffraction. The frameworks of these compounds are constructed from M(III)- and Ge-centred tetrahedra. According to inductively coupled plasma (ICP) analyses, the ratios of M(III)/Ge are 1/2 in all these compounds. The resulting negative charges in these frameworks are compensated by extra-framework M(II)(en)(3) cations. Single crystal structural analyses show that there are two crystallographically distinct atom sites for M(3+). According to the ICP results and the unique structural feature of JST, the most reasonable distribution of M(3+) cations in these structures was deduced.
一系列沸石型的铝和锗的铝酸盐和锗酸盐化合物，|M(II)(en)(3)|[M(III)(2)Ge(4)O(12)]（M(II) = Ni, Co, Zn；M(III) = Al, Ga；en = 乙二胺），是通过原位形成的[M(II)(en)(3)]（2+）阳离子作为结构导向剂合成的。这些沸石型化合物具有相同的 JST 框架拓扑结构，完全由 3 元环组成。它们的结构通过单晶 X 射线衍射确定。这些化合物的骨架由 M(III)和 Ge 为中心的四面体组成。根据电感耦合等离子体（ICP）分析，所有这些化合物中 M(III)/Ge 的比例均为 1/2。这些骨架中的负电荷由额外的骨架[M(II)(en)(3)]（2+）阳离子补偿。单晶结构分析表明，M(3+)有两个晶相不同的原子位置。根据 ICP 结果和 JST 的独特结构特征，推断出这些结构中 M(3+)阳离子的最合理分布。
