title: First heterometallic Ga(III)-Dy(III) single-molecule magnets: implication of Ga(III) in extracting Fe-Dy interaction.
abstract: The compounds of the system [M4M'2(μ3-OH)2(nbdea)4(C6H5CO2)8]·MeCN, where M = Ga(III), M' = Dy(III) (), M = Fe(III), M' = Y(III) () are isostructural to the known [Fe4Dy2] compound (). Those of the system [M4M'4(μ3-OH)4(nbdea)4(m-CH3C6H4CO2)12]·nMeCN, where M = Ga(III), M' = Dy(III), n = 4 (), M = Fe(III), M' = Y(III), n = 1 () are isostructural to the [Fe4Dy4] compound (). This allows for comparisons between single ion effects of the paramagnetic ions. The structures were determined using single crystal analysis. Magnetic susceptibility measurements reveal that the Ga(III)-Dy(III) compounds and are SMMs. The energy barrier for is close to that for the known isostructural Fe4Dy2 compound (), but with a significantly increased relaxation time.
authors.affiliation: Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse15, 76131 Karlsruhe, Germany. valeriu.mereacre@kit.edu annie.powell@kit.edu and State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. chensihuai@fjirsm.ac.cn.
authors.forename: Sihuai
authors.initials: S
authors.lastname: Chen
authors.affiliation: Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse15, 76131 Karlsruhe, Germany. valeriu.mereacre@kit.edu annie.powell@kit.edu.
authors.forename: Valeriu
authors.initials: V
authors.lastname: Mereacre
authors.affiliation: Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse15, 76131 Karlsruhe, Germany. valeriu.mereacre@kit.edu annie.powell@kit.edu.
authors.forename: Christopher E
authors.initials: CE
authors.lastname: Anson
authors.affiliation: Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse15, 76131 Karlsruhe, Germany. valeriu.mereacre@kit.edu annie.powell@kit.edu and Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
authors.forename: Annie K
authors.initials: AK
authors.lastname: Powell