Structural determination and magnetic studies of a 3d-4f heterometallic hexanuclear [CoIII2DyIII4(μ 3-OH)2(salpa)4(NO3) 4(OAc)4(H2O)2] (1) cluster, where H2salpa = N-(2-hydroxybenzyl)-3-amino-1-propanol, are reported. Single-crystal X-ray diffraction studies reveal that the cluster contains a defect-dicubane central core composed of four DyIII ions, which are supported by two oxygen atoms from the acetate groups, two alkoxo groups and two μ3-OH groups, which are displaced above and below the Dy 4 plane. Moreover, the remaining CoIII ions are linked to the defect-dicubane core through two alkoxo groups and two phenoxido groups. Because of the presence of diamagnetic CoIII ions, the magnetic properties of complex 1 can be attributed to the presence of the four Dy III ions. Variable temperature direct current (dc) magnetic susceptibility measurements reveal spin-orbital coupling and/or antiferromagnetic interactions between the DyIII ions. Alternating current (ac) magnetic susceptibility measurements indicate that complex 1 exhibits slow magnetization relaxations.
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry