Magnetic Tuning of an Anionic Co-II-MOF through Deionization of the Framework: Spin-Canting, Spin-Flop, and Easy-Plane Magnetic Anisotropy
Magnetic Tuning of an Anionic Co-II-MOF through Deionization of the Framework: Spin-Canting, Spin-Flop, and Easy-Plane Magnetic Anisotropy
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通过框架去离子化阴离子 Co-II-MOF 的磁调谐：自旋倾斜、自旋翻转和 Easy-Plane 磁各向异性
DOI：
10.1002/chem.201604809
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Du Shao-Wu
中科院分区：
文献类型：
--
作者：
Tian chong-bin;Han Yun-hu;He Zhang-Zhen;Du Shao-Wu
由高度对称的CoII 3（μ3-OH）三角形组成的阴离子CoII-MOF（Me 2NH 2）[Co 3（Me 2NH）3（OH）（SDBA）3]（1）（H2SDBA= 4，4 ′-磺酰基二苯甲酸）表现出自旋倾斜、自旋翻转和易面磁各向异性。对单晶的测量表明，1的a面是易磁化面。通过同时去除Co中心的配位二甲胺（DMA）分子和离子基团DMA+和OH−进行结构修饰后，所得中性无定形骨架2显示出增强的自旋阻挫效应。1的去离子化没有导致骨架的崩溃，显示了骨架结构的高稳定性。
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 theabplane of1is 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 framework2displays an enhanced spin frustration effect. The deionization of1does not result in the collapse of the framework, showing the high stability of the backbone structure.