Structure-property correlation in stabilizing axial magnetic anisotropy in octahedral Co(II) complexes
Stabilizing an easy axis of magnetization in an octahedral Co(II) complex is an extremely challenging task, which is evident from reports that more than 90% possess easy-plane anisotropy. Here, we report a six-coordinate complex, [Co(L1)4(Cl)2] (1, L1 = thiourea [H2N-CS-NH2]), that exhibits a D valu...
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| Hauptverfasser: | , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
12 April 2021
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| In: |
Cell reports. Physical science
Year: 2021, Jahrgang: 2, Heft: 4, Pages: 1-19 |
| ISSN: | 2666-3864 |
| DOI: | 10.1016/j.xcrp.2021.100404 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.xcrp.2021.100404 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S2666386421000941 
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| Verfasserangaben: | Shalini Tripathi, Shefali Vaidya, Naushad Ahmed, Emil Andreasen Klahn, Huibo Cao, Lena Spillecke, Changhyun Koo, Sven Spachmann, Rüdiger Klingeler, Gopalan Rajaraman, Jacob Overgaard, and Maheswaran Shanmugam |
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| 245 | 1 | 0 | |a Structure-property correlation in stabilizing axial magnetic anisotropy in octahedral Co(II) complexes |c Shalini Tripathi, Shefali Vaidya, Naushad Ahmed, Emil Andreasen Klahn, Huibo Cao, Lena Spillecke, Changhyun Koo, Sven Spachmann, Rüdiger Klingeler, Gopalan Rajaraman, Jacob Overgaard, and Maheswaran Shanmugam |
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| 520 | |a Stabilizing an easy axis of magnetization in an octahedral Co(II) complex is an extremely challenging task, which is evident from reports that more than 90% possess easy-plane anisotropy. Here, we report a six-coordinate complex, [Co(L1)4(Cl)2] (1, L1 = thiourea [H2N-CS-NH2]), that exhibits a D value of −63(10) cm−1. The presence of an easy axis of magnetization associated with 1 is experimentally proven by detailed magnetic studies and polarized neutron diffraction studies, and the experimental observations are well corroborated by theoretical calculations. From the combined experimental and theoretical investigations (on 1 and many model systems), we unveil the parameters that control stabilization of negative D in a thermodynamically favorable and air-stable Co(II) ion in the common distorted octahedral geometry. This study paves the way for overcoming the current impediments to alleviate the easy axis of magnetization using rational ligand choice. | ||
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