Synthesis and Magnetic Properties of Solid Solutions of Ferromagnetic Layered Coordination Polymers Prepared from Solution and the Solid State
Synthesis and Magnetic Properties of Solid Solutions of Ferromagnetic Layered Coordination Polymers Prepared from Solution and the Solid State
复制标题
DOI：
10.1021/acs.cgd.8b00865
复制
发表时间：
2018-09
影响因子：
3.8
通讯作者：
Tristan Neumann;M. Rams;C. Wellm;C. Näther
中科院分区：
文献类型：
--
作者：
Tristan Neumann;M. Rams;C. Wellm;C. Näther
Co（NCS）2和Ni（NCS）2的混合物与异烟酸乙酯在EtOH中以1：2的比例反应导致形成层状化合物[CoxNi 1-x（NCS）2（异烟酸乙酯）2]n的固溶体（混晶），其总是被另外的结晶相污染。通过使用过量的金属盐可以获得所需层化合物的纯样品，但在这种情况下，固溶体中的Co含量（通过原子吸收光谱法和能量色散X射线光谱法测定）始终低于合成中使用的含量。因此，合成了CoxNi 1-x（NCS）2（异烟酸乙酯）4的固溶体，其在加热时转化为所需层状化合物的固溶体，并且在这种情况下，Co/Ni比精确地对应于合成中使用的比例。通过将固溶体的实验粉末X射线衍射图与具有..的物理混合物的实验粉末X射线衍射图进行比较，已经表明所有化合物的固溶体的形成。
Reaction of mixtures of Co(NCS)2 and Ni(NCS)2 with ethylisonicotinate in EtOH in a ratio of 1:2 leads to the formation of solid solutions (mixed crystals) of the layered compound [CoxNi1–x(NCS)2(ethylisonicotinate)2]n that are always contaminated with an additional crystalline phase. Pure samples of the desired layer compound are accessible by using an excess of the metal salts, but in this case the Co content in the solid solutions, as determined by atomic absorption spectroscopy and energy dispersive X-ray spectroscopy, is always lower than that used in the synthesis. Therefore, solid solutions of CoxNi1–x(NCS)2(ethylisonicotinate)4 were synthesized that upon heating transform into solid solutions of the desired layered compound, and in this case the Co/Ni ratio exactly corresponds to that used in the synthesis. The formation of solid solutions of all compounds is already indicated by comparison of the experimental powder X-ray diffraction pattern of the solid solutions with that of physical mixtures wi...