Please use this identifier to cite or link to this item: https://doi.org/10.1039/c7ra07637a
Title: Synthesis, structures and magnetic properties of isoreticular polyrotaxane-type two-dimensional coordination polymers
Authors: Park, I.-H 
Herng, T.S 
Ju, H
Ding, J 
Lee, S.S
Vittal, J.J 
Keywords: Antiferromagnetism
Axles
Carbon dioxide
Carboxylation
Coordination reactions
Crystallography
Ethylene
Ligands
Magnetic properties
Polymers
Wheels
Antiferro-magnetic interactions
Antiferromagnetics
Coordination Polymers
Exchange integrals
Linear spacers
Polyrotaxanes
Solid-state structures
Spin hamiltonian
X ray crystallography
Issue Date: 2017
Citation: Park, I.-H, Herng, T.S, Ju, H, Ding, J, Lee, S.S, Vittal, J.J (2017). Synthesis, structures and magnetic properties of isoreticular polyrotaxane-type two-dimensional coordination polymers. RSC Advances 7 (72) : 45582-45586. ScholarBank@NUS Repository. https://doi.org/10.1039/c7ra07637a
Rights: Attribution 4.0 International
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. © 2017 The Royal Society of Chemistry.
Source Title: RSC Advances
URI: https://scholarbank.nus.edu.sg/handle/10635/178720
ISSN: 20462069
DOI: 10.1039/c7ra07637a
Rights: Attribution 4.0 International
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