Four azoles of different chemical structure were intercalated into MoO3, V2O5, and WO3 oxides synthetized via polycondensation of corresponding oxo-acids under the solvothermal conditions. Structural and morphology peculiarities of these hybrid materials were characterized using X-ray and neutron diffraction, electron microscopy and EPR spectroscopy. The EPR measurements provided the evidence that azole molecules coordinate monomers and oligomers of molybdic, tungstic and vanadic acids during the course of solvothermal synthesis of azole-oxide hybrid structures. This coordination is accompanied with reorganization of growing oxide frame leading to the unprecedently high azole loading. As the result, the azole-intercalated layered oxides with high concentration of ordered paramagnetic centers are formed.

中文翻译：

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唑类嵌入过渡金属氧化物的EPR研究

在溶剂热条件下，通过相应含氧酸的缩聚反应，将四种不同化学结构的唑类插入到 MoO3、V2O5 和 WO3 氧化物中。这些混合材料的结构和形态特征使用 X 射线和中子衍射、电子显微镜和 EPR 光谱进行了表征。EPR 测量提供的证据表明，在唑氧化物杂化结构的溶剂热合成过程中，唑分子协调了钼酸、钨酸和钒酸的单体和低聚物。这种配位伴随着不断增长的氧化物框架的重组，导致前所未有的高唑负载。结果，形成了具有高浓度有序顺磁中心的唑类插层层状氧化物。