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Issue 11, 2017
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Probing the influence of molecular symmetry on the magnetic anisotropy of octahedral cobalt(II) complexes

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Abstract

We herein report on the synthetic, structural, magnetic, and computational studies of six air-stable mononuclear Co(II) complexes with distorted octahedral geometry from PyBox type ligands. Magnetic and theoretical studies reveal that these complexes all exhibit field-induced type single-molecule magnet behaviour and a large energy splitting between the ground and first excited Kramers doublets. Dynamic magnetic property analysis shows that the Raman relaxation process is the predominant process in all six compounds. For complexes 1, 2, 3, 5, and 6, the contribution of the direct process also existed. Importantly, the axial zero-field splitting parameter D in this series varies from positive to negative with the increased distortion of the octahedral geometry for the Co(II) center, indicating that the fine-tuning of the molecular symmetry is an effective approach to manipulate the magnetic anisotropy in SIMs.

Graphical abstract: Probing the influence of molecular symmetry on the magnetic anisotropy of octahedral cobalt(ii) complexes

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Publication details

The article was received on 06 Sep 2017, accepted on 27 Sep 2017 and first published on 27 Sep 2017


Article type: Research Article
DOI: 10.1039/C7QI00547D
Citation: Inorg. Chem. Front., 2017,4, 1909-1916
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    Probing the influence of molecular symmetry on the magnetic anisotropy of octahedral cobalt(II) complexes

    Z. Ding, Y. Meng, Y. Xiao, Y. Zhang, Y. Zhu and S. Gao, Inorg. Chem. Front., 2017, 4, 1909
    DOI: 10.1039/C7QI00547D

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