Single‐Chain Magnetic Behavior in a Hetero‐Tri‐Spin Complex Mediated by Supramolecular Interactions with TCNQF.− Radicals |
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| Authors: | Dr. Zhao‐Xi Wang Xuan Zhang Dr. Yuan‐Zhu Zhang Prof. Dr. Ming‐Xing Li Dr. Hanhua Zhao Prof. Marius Andruh Prof. Dr. Kim R. Dunbar |
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| Affiliation: | 1. Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842‐3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/;2. Department of Chemistry, College of Science, Shanghai University, Shanghai 200444 (P. R. China);3. University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, Str. Dumbrava Rosie no. 23, 020464‐Bucharest (Romania) |
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| Abstract: | The self‐assembly of organic TCNQF.? radicals (2‐fluoro‐7,7,8,8‐tetracyano‐p‐quinodimethane) and the anisotropic [Tb(valpn)Cu]3+ dinuclear cations produced a single‐chain magnet (SCM) involving stacking interactions of TCNQF.? radicals (H2valpn is the Schiff base from the condensation of o‐vanillin with 1,3‐diaminopropane). Static and dynamic magnetic characterizations reveal that the effective energy barrier for the reversal of the magnetization in this hetero‐tri‐spin SCM is significantly larger than the barrier of the isolated single‐molecule magnet based on the {TbCu} dinuclear core. |
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| Keywords: | radical ions single‐chain magnets TCNQ radicals X‐ray diffraction π – π stacking interactions |
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