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Issue 30, 2015
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The impact of halogen ions on the guest dependent spin crossover behaviour and porosity of Co(II) one-dimensional coordination polymers [CoX2(4′-(4-pyridyl)-2,2′:6′,2′′-terpyridine)] (X = Cl and Br)

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Abstract

Discrete Co(II) spin crossover (SCO) compounds have attracted much attention for constructing highly sensitive molecular devices; however, the use of Co(II) SCO-coordination polymers (CPs) in such applications is extremely limited. The syntheses of the one-dimensional Co(II) SCO-CPs, [CoX2(pyterpy)] (pyterpy = 4′-(4-pyridyl)-2,2′:6′,2′′-terpyridine; X = Cl (1), Br (2)), are presented. The structure of 1 shows a ‘closed’ packing arrangement that exhibits gate-type water adsorption at room temperature while 2 has an ‘open’ packing arrangement that shows type I water adsorption behaviour at room temperature. In addition, both 1 and 2 adsorb CO2 at 201 K. Following water adsorption, 1·H2O and 2·H2O showed cooperative SCO at 226 K and 299 K, respectively.

Graphical abstract: The impact of halogen ions on the guest dependent spin crossover behaviour and porosity of Co(ii) one-dimensional coordination polymers [CoX2(4′-(4-pyridyl)-2,2′:6′,2′′-terpyridine)] (X = Cl and Br)

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Publication details

The article was received on 28 Mar 2015, accepted on 30 Apr 2015 and first published on 30 Apr 2015


Article type: Paper
DOI: 10.1039/C5TC00864F
Citation: J. Mater. Chem. C, 2015,3, 7865-7869
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    The impact of halogen ions on the guest dependent spin crossover behaviour and porosity of Co(II) one-dimensional coordination polymers [CoX2(4′-(4-pyridyl)-2,2′:6′,2′′-terpyridine)] (X = Cl and Br)

    R. Ohtani, K. Shimayama, A. Mishima, M. Ohba, R. Ishikawa, S. Kawata, M. Nakamura, L. F. Lindoy and S. Hayami, J. Mater. Chem. C, 2015, 3, 7865
    DOI: 10.1039/C5TC00864F

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