Slow Magnetization Relaxation in a 1-D Double-Chain Coordination Polymer Composed of {Dy^III ₄} Repeating Units

Title:Slow Magnetization Relaxation in a 1-D Double-Chain Coordination Polymer Composed of {Dy^III ₄} Repeating Units

Volume: 3 Issue: 2

Author(s): Dimitris I. Alexandropoulos, Chaoran Li, Catherine P. Raptopoulou, Vassilis Psycharis, Wolfgang Wernsdorfer, George Christou and Theocharis C. Stamatatos

Affiliation:

Keywords: Carboxylates, coordination polymers, crystal structures, dysprosium, slow magnetization relaxation.

Abstract: 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:η^1: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.

Cite this article as:

Alexandropoulos I. Dimitris, Li Chaoran, Raptopoulou P. Catherine, Psycharis Vassilis, Wernsdorfer Wolfgang, Christou George and Stamatatos C. Theocharis, Slow Magnetization Relaxation in a 1-D Double-Chain Coordination Polymer Composed of {Dy^III ₄} Repeating Units, Current Inorganic Chemistry (Discontinued) 2013; 3 (2) . https://dx.doi.org/10.2174/1877944111303020008

DOI https://dx.doi.org/10.2174/1877944111303020008	Print ISSN 1877-9441
Publisher Name Bentham Science Publisher	Online ISSN 1877-945X