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A Single‐Ion Magnet Tape with Five‐Coordinate Cobalt(II) Centers

Von Wiley-VCH zur Verfügung gestellt

A one-dimensional coordination polymer with five-coordinate cobalt(II) centers and a ribbon topology was reported to show field-induced single-ion magnet behavior.


Abstract

A one-dimensional (1D) coordination polymer [Co(btca)1/2(mbpy)]n (1, mbpy=4,4′-Dimethyl-2,2′-bipyridyl, H4 btca=1,2,4,5-Benzenetetracarboxylic acid) constructed by a mixed tetracarboxylic-dipyridyl ligand strategy with a ribbon topology was synthesized and magnetically characterized. Magnetic studies combined with theoretical calculations reveal large easy-axis magnetic anisotropy of the central Co(II) ions in a highly distorted five-coordination geometry. Interestingly, field-induced single-ion magnet (SIM) behavior was evidenced in the chain compound, making the cobalt(II) coordination ribbon to be the first five-coordinate SIM chain.

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