A 2-D coordination polymer incorporating cobalt(ii), 2-sulfoterephthalate and the flexible bridging ligand 1, 3-di(4-pyridyl)propane. Issue 2 (23rd December 2014)

• Record Type: Journal Article
• 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
• Is Part Of: Inorganic chemistry frontiers. Volume 2:Issue 2(2015)
• Page Start: 157
• Page End: 163
• Publication Date: 2014-12-23
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c4qi00201f
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : A robust 2-D coordination polymer that maintains its single-crystallinity upon desolvation is reported. Abstract : The cobalt derivative {[Co3 (2-stp )2 (dpp )4 ]·2H2 O} n (1 ) has been hydro(solvo)thermally synthesised by combining sodium 2-sulfoterephthalic acid (2-stp H2 Na) and divalent cobalt nitrate in presence of the flexible N-donor co-liganddpp (1, 3-di(4-pyridyl)propane). Single-crystal X-ray diffraction shows that1 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. Compound1 proved to be robust to the removal of the solvent water molecules, which was achieved by heating the sample to yield the desolvated complex {[Co3 (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 N2 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.