期刊
DALTON TRANSACTIONS
卷 49, 期 22, 页码 7620-7627出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0dt01232g
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资金
- National Natural Science Foundation [21601070, 51672114, 21701046]
- Six Talent Peaks Project in Jiangsu Province, China [XCL-026]
- Natural Science Foundation of Jiangsu Province of China [BK20171404]
- ShanDong Industrial Tecchnology Research Institute [Y95P021P05]
A series of mononuclear seven-coordinate Co(ii) complexes [Co-II(BPA-TPA)](ClO4)(2)center dot H2O (2-ClO4), [Co-II(BPA-TPA)](PF6)(2)(3-PF6) and [Co-II(BPA-TPA)](BPh4)(2)(4-BPh4) have been synthesized based on the ligand 2,6-bis(bis(2-pyridylmethyl)amino)methylpyridine (BPA-TPA), and their structures have been characterized by single-crystal X-ray diffraction. All these complexes feature an intermediate coordination polyhedron between a capped trigonal prism and a capped octahedron, which is perturbed by the variation of the counter anions. Easy-plane magnetic anisotropies for all complexes were revealedviathe analyses of the direct-current magnetic data and high-field electron paramagnetic resonance (HFEPR) spectra. They show slow magnetic relaxation under applied direct current field, which is similar to the previously reported complex [Co-II(BPA-TPA)](BF4)(2)(1-BF4) with a capped trigonal prism. This work provides a new example of modulating the properties of single-ion magnets (SIMs) by changing the counter anions.
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