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Issue 20, 2019
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Field-induced single-ion magnet behaviour of a hexacoordinated Co(II) complex with easy-axis-type magnetic anisotropy

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Abstract

A coordination compound with the composition [CoLCl2]·H2O (L = bis-condensation product of diacetyl and 2-hydrazinyl-4,6-dimethylpyrimidine) was synthesized, in which the Co(II) ion was hexacoordinated. Under applied DC fields, this compound exhibited single-ion magnet behavior. Two relaxation processes were observed when increasing the applied magnetic field from 1000 to 3200 Oe. The first relaxation (high-frequency) was observed both at 1000 Oe and 3200 Oe, while the second relaxation was only registered under a field of 3200 Oe at low frequencies (<1 Hz) and low temperatures (<5 K). Modeling of the magnetic DC properties using the Griffith Hamiltonian accompanied by quantum chemical calculations revealed easy-axis-type magnetic anisotropy with weak rhombic contributions.

Graphical abstract: Field-induced single-ion magnet behaviour of a hexacoordinated Co(ii) complex with easy-axis-type magnetic anisotropy

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Publication details

The article was received on 20 Feb 2019, accepted on 18 Apr 2019 and first published on 18 Apr 2019


Article type: Paper
DOI: 10.1039/C9DT00770A
Dalton Trans., 2019,48, 6960-6970

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    Field-induced single-ion magnet behaviour of a hexacoordinated Co(II) complex with easy-axis-type magnetic anisotropy

    Y. P. Tupolova, I. N. Shcherbakov, L. D. Popov, V. E. Lebedev, V. V. Tkachev, K. V. Zakharov, A. N. Vasiliev, D. V. Korchagin, A. V. Palii and S. M. Aldoshin, Dalton Trans., 2019, 48, 6960
    DOI: 10.1039/C9DT00770A

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