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Using the flexible ligand bis(2-hydroxyethyl)amino-tris (hydroxymethyl)methane ("bis-tris") to access a family of 3d-4f Mn(III)4Ln4 complexes
Authors:Khan Amin  Lan Yanhua  Kostakis George E  Anson Christopher E  Powell Annie K
Institution:Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, D-76131 Karlsruhe, Germany.
Abstract:A series of isostructural 3d-4f coordination clusters (CCs) Mn(4)Ln(4)(OH)(6)(H(2)L)(2)(H(3)L)(2)(PhCO(2))(2)(N(3))(2)(MeOH)(4)]Cl(1.6)(N(3))(0.4)(NO(3))(2)·2.4H(2)O·1.6MeOH where Ln = Gd, Tb, Dy, Ho and Er and H(5)L = bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane (bis-tris) has been synthesised and structurally characterised. The paramagnetic metal ions within the clusters are weakly antiferromagnetically coupled, with the Tb and Dy compounds displaying slow relaxation of their magnetisation. This is the first report of this versatile ligand being used to target 3d-4f CCs.
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