Abstract
A series of three β-diketone mononuclear lanthanide complexes, namely, Dy(5,6-DTFI)3(H2O)2·H2O2CH2Cl2 (1), Tb(5,6-DTFI)3(H2O)2·H2O2CH2Cl2 (2) and Ho(5,6-DTFI)3(H2O)2·H2O2CH2Cl2 (3) (5,6-DTFI=5,6-dimethoxy-2-(2,2,2-trifluoroethyl)-1-indone) have been isolated by reactions of 5,6-DTFI and LnCl3·6H2O (Ln=Dy, Tb, Ho). X-ray crystallographic analysis reveals that complexes 1–3 are all eight-coordinated mononuclear structures. Magnetic studies indicate that complex 1 is of single-molecule magnetic behaviors under 0 Oe. Notably, the ligands play essential role on regulating their magnetism. The corresponding structural and magnetic parameters have been discussed in details.
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