Sequential Transformation of Zirconium(IV)‐MOFs into Heterobimetallic MOFs Bearing Magnetic Anisotropic Cobalt(II) Centers |
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| Authors: | Dr Shuai Yuan Dr Jun‐Sheng Qin Jian Su Dr Bao Li Jialuo Li Wenmiao Chen Hannah F Drake Dr Peng Zhang Dr Daqiang Yuan Prof?Dr Jinglin Zuo Prof?Dr Hong‐Cai Zhou |
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| Institution: | 1. Department of Chemistry, Texas A&M University, College Station, TX, USA;2. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, P. R. China;3. State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, P. R. China;4. Department of Materials Science and Engineering, Texas A&M University, College Station, TX, USA |
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| Abstract: | Heterometallic metal–organic frameworks (MOFs) allow the precise placement of various metals at atomic precision within a porous framework. This new level of control by MOFs promises fascinating advances in basic science and application. However, the rational design and synthesis of heterometallic MOFs remains a challenge due to the complexity of the heterometallic systems. Herein, we show that bimetallic MOFs with MX2(INA)4 moieties (INA=isonicotinate; M=Co2+ or Fe2+; X=OH?, Cl?, Br?, I?, NCS?, or NCSe?) can be generated by the sequential modification of a Zr‐based MOF. This multi‐step modification not only replaced the linear organic linker with a square planar MX2(INA)4 unit, but also altered the symmetry, unit cell, and topology of the parent structure. Single‐crystal to single‐crystal transformation is realized so that snapshots for transition process were captured by successive single‐crystal X‐ray diffraction. Furthermore, the installation of Co(NCS)2(INA)4 endows field‐induced slow magnetic relaxation property to the diamagnetic Zr‐MOF. |
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| Keywords: | heterometallic MOFs metal– organic frameworks postsynthetic modification single-crystal to single-crystal transformation |
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