A series of lanthanide organic–inorganic hybrid frameworks with unusual trinodal topology: Syntheses, structures and magnetic properties

Five isomorphous lanthanide–organic frameworks based on 3-carboxymethoxy phenyl acrylic acid (H2L), [LnL(HCOO)(H2O)]n (Ln = La(1), Ce(2), Pr(3), Nd(4), Y(5)), have been hydrothermally synthesized. X-ray structural analysis reveals that these complexes are rare organic–inorganic hybrid frameworks with unusual (3, 4, 7)-connected (42.6) (44.62) (49.68.84) topology. Moreover, the magnetic properties of 2 and 3 were also investigated and suggested that the thermal depopulation of the crystal-field energy levels of the multiplet, and the antiferromagnetic interactions between Ln3 + ions.