title: Solvent responsive magnetic dynamics of a dinuclear dysprosium single-molecule magnet.
abstract: A new dysprosium(III) phosphonate dimer {Dy(notpH4)(NO3)(H2O)}2·8H2O (1) [notpH6=1,4,7-triazacyclononane-1,4,7-triyl-tris(methylenephosphonic acid)] that contains two equivalent Dy(III) ions with a three-capped trigonal prism environment is reported. Complex 1 can be transformed into {Dy(notpH4)(NO3)(H2O)}2 (2) in a reversible manner by desorption and absorption of solvent water at ambient temperature. This process is accompanied by a large dielectric response. Magnetic studies reveal that both 1 and 2 show thermally activated magnetization relaxation as expected for single-molecule magnets. Moreover, the magnetic dynamics of the two compounds can be manipulated by controlling the number of solvent molecules at room temperature.
authors.affiliation: Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructure, Nanjing University, Nanjing 210093, P. R. China.
authors.forename: Min
authors.initials: M
authors.lastname: Ren
authors.forename: Song-Song
authors.initials: SS
authors.lastname: Bao
authors.forename: Norihisa
authors.initials: N
authors.lastname: Hoshino
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Akutagawa
authors.forename: Bingwu
authors.initials: B
authors.lastname: Wang
authors.forename: Yu-Chen
authors.initials: YC
authors.lastname: Ding
authors.forename: Shiqiang
authors.initials: S
authors.lastname: Wei
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Zheng
keywords: dysprosium; magnetic properties; phosphonates; single-molecule magnets; solvent effects