Coordination of Trivalent Lanthanides with Bismalonamide Ligands: Implications for Liquid-Liquid Extraction
Artikel i vetenskaplig tidskrift, 2017

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 an ortho-xylylene [C6H4(CH2)(2)] platform with trivalent lanthanides was investigated, both in solid and solution states. The crystal structures [Nd-2(NO3)(6)L-2]center dot(CH3CN)(3) (2), [Nd-2(NO3)(4)L-2]center dot[Nd(NO3)(5)]center dot(CH3CN) 1.5 (3), Ce(NO3)(3)L-2 (4), and [NdL2]center dot(ClO4)(3)center dot C2H5OH (5) were analyzed by single-crystal X-ray diffraction. The ortho-bismalonamide (L) is tetradentate in structures 2, 3, and 5 and bidentate in 4 only. It was found that 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 metal ions with this type of ligand.

Bismalonamides

Liquid-liquid extraction

Lanthanides

Mass spectrometry

Structure elucidation

Författare

Mikhail S Tyumentsev

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Mark Foreman

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

A. M. Z. Slawin

University of St Andrews

D. B. Cordes

University of St Andrews

Otto Savolainen

Chalmers, Biologi och bioteknik

Rikard E Ylmén

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Britt-Marie Steenari

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Christian Ekberg

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

European Journal of Inorganic Chemistry

1434-1948 (ISSN)

4285-4298

Ämneskategorier

Oorganisk kemi

Infrastruktur

Chalmers infrastruktur för masspektrometri

DOI

10.1002/ejic.201700801