Coordination of Trivalent Lanthanides with Bismalonamide Ligands: Implications for Liquid–Liquid Extraction

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 [C 6 H 4 (CH 2 ) 2 ] platform with trivalent lanthanides was investigated, both in solid and solution states. The crystal structures [Nd 2 (NO 3 ) 6 L 2 ] · (CH 3 CN) 3 ( 2 ), [Nd 2 (NO 3 ) 4 L 2 ] · [Nd(NO 3 ) 5 ] · (CH 3 CN)...