R. A. Rodriguez Pineda, I. A. Karavaev, E. V. Savinkina, E. V. Volchkova, Zh. Yu. Pastukhova, L. G. Bruk, G. A. Buzanov, A. S. Kubasov, V. M. Retivov
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引用次数: 0
摘要
摘要硝酸钴(II)或高氯酸钴与乙酰胺(AA)或碳酰胺(Ur)在水介质中反应生成配位化合物[Co(Ur)4](NO3)2 (I)、[Co(AA)4(H2O)2](NO3)2（III）、[Co(AA)4(H2O)2](NO3)2∙2AA（IV）、[Co(Ur)6](ClO4)2（V）、[Co(AA)4(H2O)2](ClO4)2（VI）和[Co(AA)6](ClO4)2（VII）。通过物理化学方法确定了分离出的复合物的成分，并解决了化合物 II、V、VI 和 VII 的晶体和分子结构问题。还详细研究了所有合成化合物在宽温度范围内的热行为特征。研究表明，这些化合物可用作前驱体，利用自蔓延高温合成法制备纳米级 Co3O4。研究了由此合成的 Co3O4 在烯丙醇环氧化模型中的催化活性。
Coordination Compounds of Cobalt(II) Nitrate and Perchlorate with Acetamide and Carbamide: Precursors for the Synthesis of Catalytically Active Tricobalt Tetraoxide
The reactions of cobalt(II) nitrate or perchlorate with acetamide (AA) or carbamide (Ur) in an aqueous medium results in formation of coordination compounds [Co(Ur)4](NO3)2 (I), [Co(Ur)6](NO3)2 (II), [Co(AA)4(H2O)2](NO3)2 (III), [Co(AA)4(H2O)2](NO3)2∙2AA (IV), [Co(Ur)6](ClO4)2, (V), [Co(AA)4(H2O)2](ClO4)2 (VI), and [Co(AA)6](ClO4)2 (VII). The compositions of the isolated complexes are determined by physicochemical methods, and the crystal and molecular structures of compounds II, V, VI, and VII are solved. Specific features of the thermal behavior of all synthesized compounds in a wide temperature range are studied in detail. These compounds are shown to be used as precursors in the preparation of nanosized Co3O4 using self-propagating high-temperature synthesis. The catalytic activity of thus synthesized Co3O4 in the model epoxidation of allyl alcohol is studied.
期刊介绍：
Russian Journal of Coordination Chemistry is a journal that publishes reviews, original papers, and short communications on all aspects of theoretical and experimental coordination chemistry. Modern coordination chemistry is an interdisciplinary science that makes a bridge between inorganic, organic, physical, analytical, and biological chemistry.
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