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Polymers 2019, 11(1), 119; https://doi.org/10.3390/polym11010119

A Three-Dimensional Nickel(II) Framework from a Semi-Flexible Bipyrimidyl Ligand Showing Weak Ferromagnetic Behavior

Department of Chemistry, Tunghai University, Taichung 407, Taiwan
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Received: 27 November 2018 / Revised: 8 January 2019 / Accepted: 9 January 2019 / Published: 11 January 2019
(This article belongs to the Special Issue Advances in Coordination Polymers)
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Abstract

A semi-flexible bipyrimidyl ligand, 5,5′-bipyrimidin (bpym), was used for the self-assembly of a transition metal coordination polymer, resulting in the formation of a nickel(II) compound, [Ni(Br)2(bpym)2]n (1) with a three-dimemsional (3D) structure. Single-crystal X-ray analysis showed that compound 1 crystallizes in the monoclinic space group C2/c and the structure represents a 3D (4,4)-connected bbe topological framework constructed of nickel(II) ions, twisted cis-μ-bpym and planar trans-μ-bpym groups. Magnetic characterization revealed that 1 shows antiferromagnetic coupling between the pyrimidyl-bridged Ni(II) ions along with weak ferromagnetism due to spin canting with a magnetic ordering below Tc = 3.4 K. View Full-Text
Keywords: semi-flexible bipyrimidyl ligand; coordination polymer; magnetic properties; spin-canting; magnetic ordering; weak ferromagnetism semi-flexible bipyrimidyl ligand; coordination polymer; magnetic properties; spin-canting; magnetic ordering; weak ferromagnetism
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Dong, S.-S.; Yang, C.-I. A Three-Dimensional Nickel(II) Framework from a Semi-Flexible Bipyrimidyl Ligand Showing Weak Ferromagnetic Behavior. Polymers 2019, 11, 119.

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