Journal
POLYMERS
Volume 11, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/polym11010119
Keywords
semi-flexible bipyrimidyl ligand; coordination polymer; magnetic properties; spin-canting; magnetic ordering; weak ferromagnetism
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Funding
- Ministry of Science and Technology of Taiwan [MOST 106-2113-M-029-008]
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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--bpym and planar trans--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 T-c = 3.4 K.
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