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首页> 外文期刊>Crystal growth & design >SU-22 and SU-23: Layered germanates built from 4-coordinated Ge-7 clusters exhibiting structural variations on the 4(4) topology
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SU-22 and SU-23: Layered germanates built from 4-coordinated Ge-7 clusters exhibiting structural variations on the 4(4) topology

机译：SU-22和SU-23：由4个协调的Ge-7簇构建的分层德国人，在4（4）拓扑上表现出结构变化

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摘要

Two novel layered germanates, denoted as SU-22 and SU-23, have been synthesized hydro(solvo)thermally by using diethylenetriamine (DETA) and 1,7-diaminoheptane (DAHep) as structure directing agents (SDAs), respectively. Their structures were determined by single-crystal X-ray diffraction. Both structures are built from the same Ge-7 clusters which are 4-coordinated following a 4(4) topology with different modes of linkage. SU-23 is the first example of a different mode leading to the formation of 10-rings, instead of 8- and 12-rings observed in the ASU-20 compounds and SU-22. A third type of linkage is also proposed. The study of the hydrogen bonding interaction pattern is developed to provide insight into the formation of these different modes in relation with the size and geometry of the SDAs, as they have a significant effect on the rotation and arrangements of Ge7 clusters. SU-22, [C4N3H15](1.5)[Ge7O14X3]center dot H2O (X = OH or F), monoclinic, space group C2/c, a = 16.0583(8), b = 16.4484(10), c = 17.7788(8) angstrom, beta = 98.151(6)degrees, R1 = 0.0430, for 4248 reflections with I < 2 sigma(I). SU-23, [C7N2H19][C7N2H20][Ge7O14X3][GeO2](0.2)center dot 3H(2)O, monoclinic, space group P2(1), a = 13.036(3), b = 9.4726(19), c = 30.814(6) angstrom, beta = 100.03(3)degrees, R1 = 0.0349 for 5741 reflections with I < 2 sigma(I).
机译：分别使用二亚乙基三胺（DETA）和1,7-二氨基庚烷（DAHep）作为结构导向剂（SDA），通过水热合成了两种新型的分层锗酸盐，分别称为SU-22和SU-23。它们的结构通过单晶X射线衍射确定。两种结构均由相同的Ge-7集群构建而成，这些集群按照具有不同链接模式的4（4）拓扑进行4坐标协调。 SU-23是导致10环形成的不同模式的第一个例子，而不是在ASU-20化合物和SU-22中观察到的8和12环。还提出了第三种类型的链接。氢键相互作用模式的研究旨在提供与SDA的大小和几何形状有关的这些不同模式的形成的见解，因为它们对Ge7团簇的旋转和排列有重大影响。 SU-22，[C4N3H15]（1.5）[Ge7O14X3]中心点H2O（X = OH或F），单斜，空间群C2 / c，a = 16.0583（8），b = 16.4484（10），c = 17.7788（ 8）对于4248次反射（I <2 sigma（I）），埃，贝塔= 98.151（6）度，R1 = 0.0430。 SU-23，[C7N2H19] [C7N2H20] [Ge7O14X3] [GeO2]（0.2）中心点3H（2）O，单斜面，空间群P2（1）/ n，a = 13.036（3），b = 9.4726（19） ），对于I <2 sigma（I）的5741次反射，c = 30.814（6）埃，β= 100.03（3）度，R1 = 0.0349。

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