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Issue 41, 2019
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Field-induced slow magnetic relaxation in two-dimensional and three-dimensional Co(ii) coordination polymers

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Abstract

Two coordination polymers formulated as [Co(1,4-bimb)0.5(5-aip)(H2O)]n (1) and [Co(1,4-bib)1.5(5-hip)(H2O)]n (2) (1,4-bimb = 1,4-bis(imidazol-1-ylmethyl)benzene, 5-aip = 5-aminoisophthalic acid, 1,4-bib = 1,4-bis(1-imidazolyl)benzene and 5-hip = 5-hydroxyisophthalic acid) have been prepared and structurally characterized. Complex 1 is a two-dimensional (2D) network where Co(II) is six coordinate in a CoO4N2 coordination environment, while the structure of 2 consists of a three-dimensional (3D) framework built from mononuclear Co(II) units with distorted octahedral geometry as nodes. Static magnetic studies show that first-order orbital angular momentum may play an important role in the magnetic properties of 1, whereas strong easy-axis anisotropy (D = −102 cm−1) was observed in 2. Alternating current (ac) susceptibility measurements demonstrate that both the complexes display field-induced single ion magnet (SIM) behavior.

Graphical abstract: Field-induced slow magnetic relaxation in two-dimensional and three-dimensional Co(ii) coordination polymers

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Publication details

The article was received on 17 May 2019, accepted on 08 Jul 2019 and first published on 09 Jul 2019


Article type: Paper
DOI: 10.1039/C9DT02070E
Dalton Trans., 2019,48, 15529-15536

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    Field-induced slow magnetic relaxation in two-dimensional and three-dimensional Co(II) coordination polymers

    D. Ma, G. Peng, Y. Zhang and B. Li, Dalton Trans., 2019, 48, 15529
    DOI: 10.1039/C9DT02070E

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