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000620198 245__ $$aA Structure and Magnetism Study of {Mn$^{II}$$ _3$Mn$^{IV}$Ln$^{III}$$ _3$} Coordination Complexes with Ln = Dy, Yb
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000620198 520__ $$aWe report the research results of polynuclear complexes consisting of 3d-4f mixed-metal cores that are maintained by acetate ligands and multidentate Schiff base ligands with structurally exposed thioether groups. The presence of the latter at the periphery of these neutral compounds enables their anchoring onto substrate surfaces. Specifically, we investigated the electronic and magnetic properties as well as the structural arrangement in Mn$^{II}$$_3$Mn$^{IV}$Ln$^{III}$$_3$ with Ln = Dy, Yb coordination complexes using various complementary methods. We studied the electronic and atomic structure of the target compounds using the XAS and XES techniques. The molecular structures of the compounds were determined using density functional theory, and the magnetic data were obtained as a function of the magnetic field. Using the XMCD method, we followed the changes in the electronic and magnetic properties of adsorbed magnetic compounds induced by the reaction of ligands through interaction with the substrate. The complexes show antiferromagnetic exchange interactions between Mn and Ln ions. The spectroscopic analyses confirmed the structural and electronic integrity of complexes in organic solution. This study provides important input for a full understanding of the dependence of the magnetic properties and the molecule–substrate interaction of single adsorbed molecules on the type of ligands. It highlights the importance of chemical synthesis for controlling and tailoring the magnetic properties of metalorganic molecules for their use as optimized building blocks of future molecular spin electronics.
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000620198 7001_ $$0P:(DE-H253)PIP1099964$$aAsanova, Tatiana$$b1
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000620198 7001_ $$0P:(DE-H253)PIP1023170$$aFromme, Petra$$b3
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