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Magnetochemistry 2016, 2(3), 35; doi:10.3390/magnetochemistry2030035

Modulating the Slow Relaxation Dynamics of Binuclear Dysprosium(III) Complexes through Coordination Geometry

Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462066, MP, India
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Academic Editor: Floriana Tuna
Received: 30 August 2016 / Revised: 12 September 2016 / Accepted: 13 September 2016 / Published: 21 September 2016
(This article belongs to the Special Issue Molecules in Quantum Information)
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Abstract

A class of two dinuclear dysprosium based complexes 1 and 2 were synthesized by employing salicyloylhydrazone derived pentadentate ligand (L). Structural analysis reveals that in complex 1, two DyIII centers are in muffin (Cs) coordination geometry while in 2, one DyIII center is in bicapped square antiprism (D4d) and other one is in triangular dodecahedron (D2d) coordination geometry. AC magnetic susceptibility measurements disclose that complexes 1 and 2 exhibit single-molecule magnet (SMM) behavior, with effective energy barrier of 36.4 and 9.7 K, respectively. The overall studies reveal that small differences in the coordination environment around the DyIII centers played a significant role in the difference in relaxation dynamics of the complexes. In order to elucidate the role of intermolecular interactions between nearby DyIII centers in the magnetic relaxation behavior, a diamagnetic isostructural YIII analog (3) was synthesized and magnetic behavior was examined. View Full-Text
Keywords: dysprosium; slow magnetic relaxation; coordination environment dysprosium; slow magnetic relaxation; coordination environment
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MDPI and ACS Style

Mondal, A.K.; Parmar, V.S.; Konar, S. Modulating the Slow Relaxation Dynamics of Binuclear Dysprosium(III) Complexes through Coordination Geometry. Magnetochemistry 2016, 2, 35.

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