Synthesis, Crystal Structure and Characterization of a New Dabcodiium Hexaaquacobalt(II) Bis(Selenate), (C6H14N2)[Co(H2O)6](SeO4)2

• Published in: Journal of chemical crystallography 2012-02, Vol.42 (2), p.103-110
• Main Authors: Kammoun, Omar, Loulou, Nouha, Rekik, Walid, Naïli, Houcine, Mhiri, Tahar, Bataille, Thierry
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Crystallography and Scattering Methods; Inorganic Chemistry; Organometallic Chemistry; Original Paper; Physical Chemistry
• ISSN: 1074-1542; 1572-8854
• DOI: 10.1007/s10870-011-0210-8

The new hybrid material, cobalt selenate templated by 1,4-diazabicyclo[2.2.2]octane (abbreviated dabco), has been synthesised by the slow evaporation method at room temperature. Its crystal structure was investigated using single crystal X-ray diffraction data. It crystallises in the monoclinic system (space group P2 1 /c) with the following unit-cell parameters: a  = 12.9169(2) Å, b  = 11.9101(2) Å, c  = 12.4951(2) Å, β = 108.484(1)°, V  = 1823.10(5) Å 3 and Z  = 4. The supramolecular structure of (C 6 H 14 N 2 )[Co(H 2 O) 6 ](SeO 4 ) 2 consists of isolated [Co(H 2 O)] 2+ and (C 6 H 14 N 2 ) 2+ cations and (SeO 4 ) 2− anions linked together by three dimensional hydrogen-bond network. The infrared spectroscopy confirmed the presence of these different entities. The thermal behaviour of the precursor, studied by thermodiffractometry and thermogravimetric analyses, indicates that its decomposition proceeds through three stages giving rise to the cobalt oxide. Graphical Abstract The supramolecular structure of (C 6 H 14 N 2 )[Co(H 2 O) 6 ](SeO 4 ) 2 consists of isolated [Co(H 2 O)] 2+ and (C 6 H 14 N 2 ) 2+ cations and (SeO 4 ) 2− anions linked together by three dimensional hydrogen-bond network.