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Coordination of trivalent lanthanides with bismalonamide ligands : implications for liquid-liquid extraction

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Tyumentsev_2017_EJIC_TrivalentLanthanides_AAM.pdf (2.180Mb)
Date
10/2017
Author
Tyumentsev, Mikhail
Foreman, Mark R. St. J.
Slawin, Alexandra M. Z.
Cordes, David B.
Savolainen, Otto
Ylmén, Rikard
Steenari, Britt-Marie
Ekberg, Christian
Keywords
Lanthanides
Bismalonamides
Single-crystal X-ray diffraction
Electrospray ionization - mass spectrometry
Liquid-liquid extraction
QD Chemistry
DAS
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Abstract
The complexation of the bismalonamide ligand 2,2'-(1,2-phenylenebis(methylene))bis(N,N,N',N'-tetraethylmalonamide) (L), bearing two C-alkylated N,N,N',N'-tetraethylmalonamide groups onto ortho-xylylene (C6H4(CH2)2) platform, with trivalent lanthanides was investigated both in solid- and solution states. The crystal structures [Nd2(NO3)6L2]·(CH3CN)3 ( 2 ), [Nd2(NO3)4L2]·[Nd(NO3)5]·(CH3CN)1.5 ( 3 ), Ce(NO3)3L2 ( 4 ) and [NdL2]·(ClO4)3·C2H5OH ( 5 ) were analyzed by single-crystal X-ray diffraction. The ortho-bismalonamide (L) is tetradentate in the structures 2 , 3 and 5 and bidentate in 4 only. It was found that the structures 2 and 3 are composed of dimeric species. According to electrospray ionization - mass spectrometry the dimers are prevailing in acetonitrile solutions. The polydentate coordination of the ortho-bismalonamide (L) with trivalent lanthanides suggests that an entropy effect favors liquid-liquid extraction of the metal ions with this type of ligands.
Citation
Tyumentsev , M , Foreman , M R S J , Slawin , A M Z , Cordes , D B , Savolainen , O , Ylmén , R , Steenari , B-M & Ekberg , C 2017 , ' Coordination of trivalent lanthanides with bismalonamide ligands : implications for liquid-liquid extraction ' , European Journal of Inorganic Chemistry , vol. 2017 , no. 37 , pp. 4285-4298 . https://doi.org/10.1002/ejic.201700801
Publication
European Journal of Inorganic Chemistry
Status
Peer reviewed
DOI
https://doi.org/10.1002/ejic.201700801
ISSN
1099-0682
Type
Journal article
Rights
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1002/ejic.201700801
Description
The research leading to these results has received funding from the European Community’s Seventh Framework Programme ([FP7/2007-2013]) under grant agreement no. 607411 (MC-ITN EREAN: European Rare Earth Magnet Recycling Network)
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/16156

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