The “unsuccessful” synthesis of the non-commercially available ‘Dy(O2CPh)3’ precursor from the stoichiometric
reaction of Dy(NO3)3·5H2O with 3 equivalents of NaO2CPh in MeCN/H2O has led instead to the “successful” isolation
and structural characterization of the 1-D coordination polymer [Dy4(O2CPh)12(H2O)8]n·2n(PhCO2H)·n(MeCN)
(1·2n(PhCO2H)·n(MeCN)) in excellent yields (~90%). The one-dimensional double-chain structure of 1 was resulted from
the linkage of two parallel chains by syn,anti-η1:η1:µ PhCO2
- groups. The lattice structure of 1 is further extended to a 2-D
network through hydrogen bonding and Π-Π stacking interactions. The observation of out-of-phase (χ"M) ac susceptibility
signals suggested that 1 might be a molecular nanomagnet, and this was confirmed by single-crystal magnetization vs. dc
field sweeps that exhibited hysteresis, the diagnostic property of a magnet.
Keywords: Carboxylates, coordination polymers, crystal structures, dysprosium, slow magnetization relaxation.
Rights & PermissionsPrintExport