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Title: A 2-D coordination polymer incorporating cobalt(II), 2-sulfoterephthalate and the flexible bridging ligand 1,3-di(4-pyridyl)propane
Authors: Datta, Amitabha
Das, Kuheli
Massera, Chiara
Clegg, Jack K.
Pfrunder, Michael C.
Garribba, Eugenio
Huang, Jui-Hsien
Sinha, Chittaranjan
Maji, Tapas Kumar
Akitsu, Takashiro
Orita, Shingo
Keywords: Inorganic & Nuclear Chemistry
Metal-Organic Frameworks
Hydrogen Storage
Issue Date: 2015
Publisher: Chinese Chemical Society
Citation: Inorganic Chemistry Frontiers
Datta, A.; Das, K.; Massera, C.; Clegg, J. K.; Pfrunder, M. C.; Garribba, E.; Huang, J. H.; Sinha, C.; Maji, T. K.; Akitsu, T.; Orita, S., A 2-D coordination polymer incorporating cobalt(II), 2-sulfoterephthalate and the flexible bridging ligand 1,3-di(4-pyridyl)propane. Inorganic Chemistry Frontiers 2015, 2 (2), 157-163.
Abstract: The cobalt derivative {[Co-3(2-stp)(2)(dpp)(4)]center dot 2H(2)O}(n) (1) has been hydro(solvo)thermally synthesised by combining sodium 2-sulfoterephthalic acid (2-stpH(2)Na) and divalent cobalt nitrate in presence of the flexible N-donor co-ligand dpp (1,3-di(4-pyridyl) propane). Single-crystal X-ray diffraction shows that 1 is a two-dimensional coordination polymer with carboxylate and sulfonate oxygens and pyridyl nitrogens coordinated to the two symmetry independent octahedral cobalt(II) centres. UV-Vis, magnetic and EPR studies show that the cobalt(II) centres are high-spin. Compound 1 proved to be robust to the removal of the solvent water molecules, which was achieved by heating the sample to yield the desolvated complex {[Co-3(2-stp)(2)(dpp)(4)]}(n) (2). 2 was also characterised by single-crystal X-ray diffraction at 331 K. Gas sorption studies on this material showed only surface binding of N-2 and modest uptake for CO2. The crystallographic analysis also shows that upon desolvation, the flexible propyl groups of the dpp ligand adjust their positions, reducing the potentially accessible void volumes and accounting for the gas adsorption results.
Description: Restricted access
ISSN: 2052-1553
Appears in Collections:Research Articles (Tapas Kumar Maji)

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