期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 694, 期 11, 页码 1678-1689出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2008.11.056
关键词
Carboranes; Metallacarbaboranes; Liquid-liquid extraction; Lanthanide-actinide pertitioning
资金
- Ministry of Education of the Czech Republic [LC-523, MSM0021620857]
- AS CR [AV0Z40320502]
- EU Project EUROPART [F16W-CT-2003-508854]
- GA AS CR [A400310613]
New boron substituted cobalta bis(dicarbollide)(1-) ion (1) derivatives of formula [(8,80-(RPhP(O)(CH2)n-C(O) N)<(1,2-C2B9H10)(2)-3,3'-Co] (R = Ph or C8H17, n = 1, 3a, 3b; R = Ph, n = 2, 3c), [(8-(Ph2P(O)CH2-C(O)NR)(1,2-C2B9H10))(1',2'-C2B9H11)-3,3'-Co] (R-1 = H, C2H5, CH2C6H5, 5a-c) and [(8-((RPhP)-R-2(O)CH2C(O)-N( R-1)CH2-1,2-C2B9H10))(8'-CH3O-1',2'-C2B9H10)-3,3'-Co] (R-1 = Benzyl, R-2 = Ph or C8H17, 7a,b) were prepared with the aim to develop a new class of efficient extraction agents for partitioning of polyvalent f-block elements, i.e. lanthanides and actinides from high-level activity nuclear waste. The anionic ligands were characterized by multinuclear NMR spectroscopy and MS, the structures of Cs3a and the calcium complex of 7a were determined by X-ray diffraction analysis. The crystallographic study of the Cs3a proved a formation of linear chains in the structure, where the metal cation is coordinated by oxygen atoms of the CMPO terminal groups. The X-ray structure of the Ca2+ complex of the ionic ligand 7a proved a 1: 3 metal to ligand ratio. Presented also is the X-ray structure of the starting ammonium compound 6 used in the synthesis of 7a and 7b. With exception of 5c, these anionic ligands are of high extraction efficiency, the highest being found for 7a in low polar solvent mixture hexyl methyl ketone-dodecane 1:1. These properties qualify some of these derivatives for possible technological applications. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据