Single-Chain Magnetic Behavior in a Hetero-Tri-Spin Complex Mediated by Supramolecular Interactions with TCNQF.− Radicals†
Dr. Zhao-Xi Wang
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
Department of Chemistry, College of Science, Shanghai University, Shanghai 200444 (P. R. China)
These authors contributed equally to this work.
Search for more papers by this authorXuan Zhang
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
These authors contributed equally to this work.
Search for more papers by this authorDr. Yuan-Zhu Zhang
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
Search for more papers by this authorProf. Dr. Ming-Xing Li
Department of Chemistry, College of Science, Shanghai University, Shanghai 200444 (P. R. China)
Search for more papers by this authorDr. Hanhua Zhao
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
Search for more papers by this authorProf. Marius Andruh
University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, Str. Dumbrava Rosie no. 23, 020464-Bucharest (Romania)
Search for more papers by this authorCorresponding Author
Prof. Dr. Kim R. Dunbar
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/Search for more papers by this authorDr. Zhao-Xi Wang
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
Department of Chemistry, College of Science, Shanghai University, Shanghai 200444 (P. R. China)
These authors contributed equally to this work.
Search for more papers by this authorXuan Zhang
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
These authors contributed equally to this work.
Search for more papers by this authorDr. Yuan-Zhu Zhang
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
Search for more papers by this authorProf. Dr. Ming-Xing Li
Department of Chemistry, College of Science, Shanghai University, Shanghai 200444 (P. R. China)
Search for more papers by this authorDr. Hanhua Zhao
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
Search for more papers by this authorProf. Marius Andruh
University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, Str. Dumbrava Rosie no. 23, 020464-Bucharest (Romania)
Search for more papers by this authorCorresponding Author
Prof. Dr. Kim R. Dunbar
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX 77842-3012 (USA) http://www.chem.tamu.edu/rgroup/dunbar/Search for more papers by this authorZ.-X.W. thanks the China Scholarship Council (No. 201206895004) and National Natural Science Foundation of China (No. 21171115) for financial support to visit Texas A&M. K.R.D. and Y.-Z.Z. thank the Department of Energy, Basic Energy Sciences Division (DE-FG02-02ER45999) for generous support.
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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