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Issue 72, 2017, Issue in Progress
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Synthesis, structures and magnetic properties of isoreticular polyrotaxane-type two-dimensional coordination polymers

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Abstract

Two isoreticular polyrotaxane-type two-dimensional coordination polymers (2D CPs) [Co2(bpy)(sdb)2]·2H2O (1) and [Co2(bpe)(sdb)2]·DMA·1.5H2O (2) (where sdb = 4,4′-sulfonyldibenzoate; bpy = 4,4′-bipyridyl and bpe = 4,4′-bipyridyl ethylene) have been synthesized and their solid state structures have been determined by X-ray crystallography. The solid state structures made up of wheels and axles have been synthesized using a bent dicarboxylate (sdb), two linear spacer ligands and Co(II). Interestingly, the sheets are two-fold entangled by [Co2(sdb)2Co2] wheels and bpy or bpe axles. Due to the shorter length of the bpy ligand, the [Co2(sdb)4] moieties in 1 are brought closer than in the sheet formed in 2. The magnetic properties of 1 and 2 have been discussed and fitted according to a spin Hamiltonian. 1 showed predominantly antiferromagnetic interactions with exchange integral of −1.522 cm−1. While 2 exhibited the paramagnetic behaviour below 40 K and antiferromagnetic behaviour at higher temperature.

Graphical abstract: Synthesis, structures and magnetic properties of isoreticular polyrotaxane-type two-dimensional coordination polymers

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Publication details

The article was received on 11 Jul 2017, accepted on 19 Sep 2017 and first published on 25 Sep 2017


Article type: Paper
DOI: 10.1039/C7RA07637A
Citation: RSC Adv., 2017,7, 45582-45586
  • Open access: Creative Commons BY license
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    Synthesis, structures and magnetic properties of isoreticular polyrotaxane-type two-dimensional coordination polymers

    I. Park, T. S. Herng, H. Ju, J. Ding, S. S. Lee and J. J. Vittal, RSC Adv., 2017, 7, 45582
    DOI: 10.1039/C7RA07637A

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