title: Magnetic Tuning of an Anionic CoII-MOF through Deionization of the Framework: Spin-Canting, Spin-Flop, and Easy-Plane Magnetic Anisotropy.
abstract: An anionic CoII-MOF, (Me2NH2)[Co3(Me2NH)3(OH)(SDBA)3] (1) (H2SDBA=4,4'-sulfonyldibenzoic acid) consisting of highly symmetric CoII3(μ3-OH) triangles exhibits spin-canting, spin-flop, and easy-plane magnetic anisotropy. Measurement on a single crystal shows that the ab plane of 1 is the easy magnetization plane. After structural modification through simultaneous removal of the coordinated dimethylamine (DMA) molecule at the Co center and the ionic groups DMA+and OH-, the resulting neutral amorphous framework 2 displays an enhanced spin frustration effect. The deionization of 1 does not result in the collapse of the framework, showing the high stability of the backbone structure.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
authors.forename: Chong-Bin
authors.initials: CB
authors.lastname: Tian
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
authors.forename: Yun-Hu
authors.initials: YH
authors.lastname: Han
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
authors.forename: Zhang-Zhen
authors.initials: ZZ
authors.lastname: He
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
authors.forename: Shao-Wu
authors.initials: SW
authors.lastname: Du
keywords: magnetic anisotropy; spin frustration; spin-canting; spin-flop; structural modification