Supramolecular charge transfer adducts of rare earth 3,5-dinitrobenzoates and diaminodurene: a new approach to increasing spin density in lanthanide complexes

Seven isostructural supramolecular adducts, namely [Ln2(O2CC6H3(NO2)2)6(DMSO)4]·4(1,4-(H2N)2C6Me4) (Ln = Sm (1), Gd(2), Tb(3), Dy(4), Ho(5), Er(6), Y(7)) were synthesized by reacting LnCl3·6H2O with potassium 3,5-dinitrobenzoate in acetonitrile in the presence of...