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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MDPI AG
2025-02-01
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| Series: | Magnetochemistry |
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| Online Access: | https://www.mdpi.com/2312-7481/11/2/11 |
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| author | Hui-Hui Cui Dou-Zun Wang Shixiang Li Leixin Wang Xinrui Yu Xiancong Liu Jin Wang Miao Wang Yanfeng Tang |
| author_facet | Hui-Hui Cui Dou-Zun Wang Shixiang Li Leixin Wang Xinrui Yu Xiancong Liu Jin Wang Miao Wang Yanfeng Tang |
| author_sort | Hui-Hui Cui |
| collection | DOAJ |
| description | 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>. |
| format | Article |
| id | doaj-art-dd9cb0e7bcf047fa87ce88bbc0b6511b |
| institution | DOAJ |
| issn | 2312-7481 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Magnetochemistry |
| spelling | doaj-art-dd9cb0e7bcf047fa87ce88bbc0b6511b2025-08-20T03:12:19ZengMDPI AGMagnetochemistry2312-74812025-02-011121110.3390/magnetochemistry11020011Magnetic Anisotropy and Slow Magnetic Relaxation in Two Mononuclear Octahedral Cobalt(II) ComplexesHui-Hui Cui0Dou-Zun Wang1Shixiang Li2Leixin Wang3Xinrui Yu4Xiancong Liu5Jin Wang6Miao Wang7Yanfeng Tang8School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaTwo 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>.https://www.mdpi.com/2312-7481/11/2/11cobalt(II) complexesmagnetic anisotropyslow magnetic relaxation |
| spellingShingle | Hui-Hui Cui Dou-Zun Wang Shixiang Li Leixin Wang Xinrui Yu Xiancong Liu Jin Wang Miao Wang Yanfeng Tang Magnetic Anisotropy and Slow Magnetic Relaxation in Two Mononuclear Octahedral Cobalt(II) Complexes Magnetochemistry cobalt(II) complexes magnetic anisotropy slow magnetic relaxation |
| title | Magnetic Anisotropy and Slow Magnetic Relaxation in Two Mononuclear Octahedral Cobalt(II) Complexes |
| title_full | Magnetic Anisotropy and Slow Magnetic Relaxation in Two Mononuclear Octahedral Cobalt(II) Complexes |
| title_fullStr | Magnetic Anisotropy and Slow Magnetic Relaxation in Two Mononuclear Octahedral Cobalt(II) Complexes |
| title_full_unstemmed | Magnetic Anisotropy and Slow Magnetic Relaxation in Two Mononuclear Octahedral Cobalt(II) Complexes |
| title_short | Magnetic Anisotropy and Slow Magnetic Relaxation in Two Mononuclear Octahedral Cobalt(II) Complexes |
| title_sort | magnetic anisotropy and slow magnetic relaxation in two mononuclear octahedral cobalt ii complexes |
| topic | cobalt(II) complexes magnetic anisotropy slow magnetic relaxation |
| url | https://www.mdpi.com/2312-7481/11/2/11 |
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