1428334-41-1Relevant academic research and scientific papers
Modulating magnetic dynamics of Dy2 system through the coordination geometry and magnetic interaction
Zhang, Peng,Zhang, Li,Lin, Shuang-Yan,Xue, Shufang,Tang, Jinkui
, p. 4587 - 4592 (2013)
Two new dinuclear dysprosium compounds, [Dy2(HL 1)2(PhCOO)2(CH3OH)2] (1) and [Dy2(L2)2(NO3) 2(CH3OH)2]·2CH3OH· 4H2O (2), have been assembled through applying two ligands with different coordination pockets. The different features of ligands H 3L1 and H2L2 result in the distinct coordination geometry of the metal ions in their respective structures. The Dy ions of complexes 1 and 2 were linked by the alkoxide- and hydrazone-O, and display the hula hoop-like and the broken hula hoop-like coordination geometry, respectively. Consequently, these two compounds show distinct magnetic properties. Complex 1 behaves as a single molecule magnet (SMM) with rather slow quantum tunneling rate (τ > 274 ms), while no SMM behavior was observed for complex 2. In addition, the comparison of the structural parameters among the similar Dy2 SMMs with hula hoop-like geometry reveals the significant role played by coordination geometry and magnetic interaction in modulating the relaxation dynamics of SMMs.
