Reactivity of Tetrabutylammonium Iodide with a Heteronuclear 6Copper(II)–4Na(I) Complex: Selective Recognition of Iodide Ion

A complex of type [Cu6Na4(μ-O)4(NTA)2(bpy)6(H2O)4(NO3)2]·3H2O 1 was allowed to react separately with tetrabutylammonium salts (TBAX), X = F–, Cl–, Br–, I–, AcO–, NO3 –, and H2PO4 –. The color of complex 1 changed immediately on the addition of TBAI (tetrabutylammonium iodide) only. However, keeping...

Full description

Saved in:
Bibliographic Details
Published in:Industrial & engineering chemistry research 2013-10, Vol.52 (43), p.15007-15014
Main Authors: Kumari, Niraj, Hasan, Md. Amin, Ward, Benzamin D, Mishra, Lallan
Format: Article
Language:English
Subjects:
Affinity
Anions
Colorimetry
Diffraction
Iodides
Methyl alcohol
Recognition
Spectra
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A complex of type [Cu6Na4(μ-O)4(NTA)2(bpy)6(H2O)4(NO3)2]·3H2O 1 was allowed to react separately with tetrabutylammonium salts (TBAX), X = F–, Cl–, Br–, I–, AcO–, NO3 –, and H2PO4 –. The color of complex 1 changed immediately on the addition of TBAI (tetrabutylammonium iodide) only. However, keeping the corresponding solution for 2 months at room temperature, four complexes of compositions [Cu6(μ-OH)4(NTA)2(bpy)6]2I–·5H2O 2, [Cu2(bpy)2(OH)2(I)]2(NO3)2(H2O) 3, [Cu(bpy)2I]I3 – 4, and [Cu(bpy)2I]I·TBAI 5 (bpy = 2,2′-bipyridyl, H3NTA = nitrilotriacetic acid) together with some residues of TBAI and complex 1 were isolated in one-pot synthesis. These complexes were characterized using elemental analysis, spectroscopic (IR, UV–vis) and single crystal X-ray diffraction techniques. Colorimetric response of complex 1 with iodide anions was further supported by the changes in its UV–vis spectra recorded in methanol. The results indicated that 1 exhibits a strong affinity for iodide anions.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie401373m