Mixed ligand acetate, propionate, and pivalate complexes of rare earth metals with monoethanolamine: A new approach to the synthesis, composition, structure, and use for the preparation of oxide materials

详细信息    查看全文

• 作者：D. M. Tsymbarenko ; I. A. Martynova…
• 关键词：rare earth elements ; carboxylates ; mixed ligand complexes ; metal ; organic precursors ; synthesis ; mass ; spectrometry ; quantum ; chemistry calculations
• 刊名：Russian Journal of Coordination Chemistry
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：42
• 期：10
• 页码：662-678
• 全文大小：2,115 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Inorganic Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3318
• 卷排序：42

文摘

Compositions of mixed ligand acetate, propionate, and pivalate complexes of rare earth metals of the cerium and yttrium groups with monoethanolamine are predetermined by the synthesis conditions and the nature of the carboxylate ligand and rare earth metal ion. Solid mixed ligand complexes [Ln(Piv)<sub>5sub>(MEAH)][MEAH] and [Ln(Piv)<sub>3sub>(MEA)], homoligand complexes [Ln(Piv)<sub>3sub>] (HPiv is 2,2-dimethylpropionic (pivalic) acid), and gel-like hydroxo complexes [Ln(Carb)<sub>3–ss="EmphasisTypeItalic ">x–ss="EmphasisTypeItalic ">ysub>(NO<sub>3sub>)<sub>xsub>-(OH)<sub>ysub>(MEA)<sub>wsub>(H<sub>2sub>O)<sub>zsub>] (HCarb is acetic (HAc) or propionic (HProp) acid) are isolated using original synthesis procedures involving ion pairs [MEAH]+[Carb]–sup> (MEA is monoethanolamine). The compounds are studied by IR spectroscopy, 1H NMR spectroscopy, elemental and thermal analyses, and mass spectrometry. Specific features for the complex formation of rare earth metal pivalates with MEA are additionally studied using quantum-chemical simulation.