Liu Yufeng, Su Jiachun, Li Weihong, Wu Jinguang
State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People's Republic of China.
Inorg Chem. 2005 May 30;44(11):3890-5. doi: 10.1021/ic0501418.
In this paper, a novel coordination network of D,L-homocysteic acid with strontium chloride is reported. This compound exhibits an infinite microporous multilayered structure, describable as one-dimensional coordination-based microtubes cross-linking into cationic layers. Chloride anions are intercalated between layers to neutralize the charge, and the layers further pack into a three-dimensional solid via electrostatic interactions and hydrogen bonding. Thermogravimetric analysis (TGA), variable-temperature Fourier transform infrared spectroscopy (FT-IR), and powder X-ray diffraction (XRD) are presented to extensively study the structure. Results show that the compound is stable up to 326 degrees C. Below this temperature, the layered structure is sustained in the process of the reversible loss/gain of coordinated water, confirming that the network involves a robust coordination-based cationic layer framework but rather flexible interlayer interactions. This compound and its analogies are expected to have potential applications in anion exchange and gas storage.
本文报道了一种新型的D，L-高胱氨酸与氯化锶的配位网络。该化合物呈现出无限的微孔多层结构，可描述为一维基于配位的微管交联形成阳离子层。氯离子插层在层间以中和电荷，并且这些层通过静电相互作用和氢键进一步堆积成三维固体。本文进行了热重分析（TGA）、变温傅里叶变换红外光谱（FT-IR）和粉末X射线衍射（XRD）以广泛研究其结构。结果表明该化合物在高达326℃时是稳定 的。在此温度以下，在配位水可逆损失/获得的过程中，层状结构得以维持，这证实该网络涉及一个坚固的基于配位的阳离子层框架，但层间相互作用相当灵活。该化合物及其类似物有望在阴离子交换和气体存储方面具有潜在应用。
