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.
Original language | English |
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Pages (from-to) | 4285-4298 |
Journal | European Journal of Inorganic Chemistry |
Volume | 2017 |
Issue number | 37 |
Early online date | 6 Oct 2017 |
DOIs | |
Publication status | Published - Oct 2017 |
Keywords
- Lanthanides
- Bismalonamides
- Single-crystal X-ray diffraction
- Electrospray ionization - mass spectrometry
- Liquid-liquid extraction
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Coordination of trivalent lanthanides with bismalonamide ligands (dataset)
Tyumentsev, M. (Creator), Foreman, M. R. S. J. (Creator), Slawin, A. M. Z. (Creator), Cordes, D. B. (Creator), Savolainen, O. (Creator), Ylmén, R. (Creator), Steenari, B.-M. (Creator) & Ekberg, C. (Creator), Cambridge Crystallographic Data Centre, 12 Jun 2017
https://dx.doi.org/10.5517/ccdc.csd.cc1nr5sc and 3 more links, https://dx.doi.org/10.5517/ccdc.csd.cc1nr5td, https://dx.doi.org/10.5517/ccdc.csd.cc1nr5vf, https://dx.doi.org/10.5517/ccdc.csd.cc1p6jp3 (show fewer)
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