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Second sphere interaction in fluoroanion binding: Synthesis, spectroscopic and X-ray structural study of trans-dichlorobis(ethylenediamine) cobalt(III) terafluoroborate

Sharma, Rajni, Sharma, Raj Pal and Kariuki, Benson 2008. Second sphere interaction in fluoroanion binding: Synthesis, spectroscopic and X-ray structural study of trans-dichlorobis(ethylenediamine) cobalt(III) terafluoroborate. Journal of Fluorine Chemistry 129 (5) , pp. 325-331. 10.1016/j.jfluchem.2008.01.006

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Abstract

Trans-dichlorobis(ethylenediamine) cobalt(III) terafluoroborate was synthesised and detailed packing analysis was undertaken to delineate the topological complimentarity of [trans-Co(en)2Cl2]+ and BF4− ions by second sphere coordination. The complex was completely characterised by elemental analyses, solubility product measurement and spectroscopic studies (IR, UV–Vis, multinuclear NMR). In the crystal lattice, discrete ions [trans-Co(en)2Cl2]+ and BF4− are arranged in A–B–A–B pattern (in both a and c directions of the lattice) forming columns of anions and cations. Crystal lattice is stabilized by electrostatic forces of attraction and hydrogen bonding interactions, i.e. N–H⋯F− and N–H⋯Cl involving second sphere coordination. It appears that the topological features of [trans-Co(en)2Cl2]+ are conducive for generating second sphere interactions. This strategy may be used as a viable method for the capture of other fluoroanions.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Elsevier Science
ISSN: 0022-1139
Last Modified: 04 Jun 2017 03:43
URI: http://orca-mwe.cf.ac.uk/id/eprint/25348

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