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首页> 外文期刊>Journal of structural chemistry >Crystal structure and vibrational spectra of M[VO_2(SeO_4)(H_2O)_2]·H_2O (M = K, Rb, NH_4)
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Crystal structure and vibrational spectra of M[VO_2(SeO_4)(H_2O)_2]·H_2O (M = K, Rb, NH_4)

机译：M [VO_2（SeO_4）（H_2O）_2]·H_2O（M = K，Rb，NH_4）的晶体结构和振动光谱

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摘要

By the hydration of MVO(SeO_4)_2 with saturated water vapors at room temperature a series of isostructural complex compounds of vanadium(V) of the composition M[VO_2(SeO_4)(H_2O)_2 ]·H_2O (K, Rb, NH_4) are synthesized and their physicochemical properties are studied. Based on the X-ray and neutron diffraction data, it is found that their crystal structure is composed of VO_6 octahedra linked in infinite chains by bridging SeO_4 tetrahedra. Each of the VO_6 octahedra has two short terminal V-O bonds forming a bent dioxovanadium group VO_(~2+). Two water molecules are coordinated by vanadium and one molecule is out of the first coordination sphere in the interchain space. The vibrational spectra of the studied compounds are completely consistent with their structural features.
机译：通过在室温下将MVO（SeO_4）_2与饱和水蒸气水合，制得了组成为M [VO_2（SeO_4）（H_2O）_2]·H_2O（K，Rb，NH_4）的钒（V）的一系列同构络合物合成并对其理化性质进行了研究。根据X射线和中子衍射数据，发现它们的晶体结构由通过桥接SeO_4四面体以无限链连接的VO_6八面体组成。每个VO_6八面体具有两个短端V-O键，形成弯曲的二氧钒基团VO_（〜2 +）。两个水分子由钒配位，一个分子在链间空间中脱离第一个配位球。研究化合物的振动光谱与其结构特征完全一致。

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