Synthesis, Crystal Structures and Properties of a Series of Lanthanide Adipates [Ln 2(ad)3(H2O)4] (Ln = Y3+, Ho3+, Er3+, Tm3+)

A series of lanthanides adipates [Ln (2)(ad)(3)(H2O)(4)] [Ln = Y3+ (1), Ho3+ (2), Er3+ (3), Tm3+ (4); ad = adipate] have been hydrothermally synthesized and structurally characterized by elemental analysis, X-ray diffraction, thermogravimetric analysis, UV/Vis and IR spectroscopy. Compounds 1-4 are isostructural and exhibit 2-D polymeric layers constructed by Ln (3+) ions bridged via the carboxylate groups of adipate ligands in two binding modes. The magnetic properties of both 2 and 4 are investigated and their thermal behaviours are also discussed. The Ln (3+) ions (Ln = Y (3+) , Ho (3+) , Er (3+) , Tm (3+) ) bridged by the carboxylate groups of adipate ligands form 2-D polymeric layers. [GRAPHICS]