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Synthesis and structure of the monolayer hydrate K0.3CoO2 center dot 0.4H(2)O

机译:单层水合物K0.3CoO2中心点0.4H(2)O的合成与结构

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The monolayer hydrate (MLH) K0.3CoO2 center dot 0.4H(2)O Was synthesized from K0.6CoO2 by extracting K+ cations using K2S2O8 as an oxidant and the subsequent intercalation of water between the layers of edge-sharing CoO6 octahedra. A hexagonal structure (space group P6(3)/mmc) with lattice parameters a = 2.8262(1) A, c = 13.8269(6) A similar to the MLH Na-0.36 CoO(2)center dot 0.7H(2)O was established using high-resolution synchrotron X-ray powder diffraction data. The K/H2O layer in the K-MLH is disordered, which is in contrast to the Na-MLH. At low temperatures metallic and paramagnetic behavior was found. (c) 2005 Elsevier Ltd. All rights reserved.
机译:单水合物(MLH)K0.3CoO2中心点0.4H(2)O是由K0.6CoO2合成的,方法是使用K2S2O8作为氧化剂提取K +阳离子,然后在边缘共享的CoO6八面体层之间插入水。六边形结构(空间组P6(3)/ mmc),其晶格参数a = 2.8262(1)A,c = 13.8269(6)A与MLH Na-0.36 CoO(2)中心点0.7H(2)O相似使用高分辨率同步加速器X射线粉末衍射数据建立的。与Na-MLH相反,K-MLH中的K / H2O层是无序的。在低温下,发现金属和顺磁行为。 (c)2005 Elsevier Ltd.保留所有权利。

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