Magnetic Anisotropy and Slow Magnetic Relaxation in Two Mononuclear Octahedral Cobalt(II) Complexes
Two mononuclear octahedral Co(II) complexes, [Co(L)X<sub>2</sub>] (L = 1-(prop-2-en-1-yl)-1<i>H</i>-imidazole, X = NCS<sup>−</sup> (<b>1</b>) and NCSe<sup>−</sup> (<b>2</b>)), have been synthesized and characterized. The central...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
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| Series: | Magnetochemistry |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2312-7481/11/2/11 |
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| Summary: | Two mononuclear octahedral Co(II) complexes, [Co(L)X<sub>2</sub>] (L = 1-(prop-2-en-1-yl)-1<i>H</i>-imidazole, X = NCS<sup>−</sup> (<b>1</b>) and NCSe<sup>−</sup> (<b>2</b>)), have been synthesized and characterized. The central Co(II) ions in two complexes adopt an octahedral geometry, coordinated by four N atoms from the ligand and two N atoms from the anion. Direct-current magnetic data revealed large easy-plane magnetic anisotropy in both <b>1</b> and <b>2</b>. Dynamic magnetic measurements demonstrated that <b>1</b> and <b>2</b> display field-induced slow magnetic relaxation. For <b>1</b> and <b>2</b>, the Raman mechanism is found to the dominant process in the whole temperature range. Compared to <b>1</b>, the magnetic relaxation of <b>2</b> is faster, likely due to the presence of the hydrogen bonding system in <b>2</b>. |
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| ISSN: | 2312-7481 |