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http://dx.doi.org/10.5012/bkcs.2009.30.9.1956

Potentially Multidentate Tripodal Amine Catechol Ligands as Chelators for Ga(III) and In(III)  

Sahoo, Suban K. (Department of Applied Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT))
Baral, Minati (Department of Chemistry, National Institute of Technology (NIT))
Bera, Rati Kanta (Department of Chemistry, Sant Longowal Institute of Engineering & Technology (SLIET))
Kanungo, B. K. (Department of Chemistry, Sant Longowal Institute of Engineering & Technology (SLIET))
Publication Information
Bulletin of the Korean Chemical Society / v.30, no.9, 2009 , pp. 1956-1962 More about this Journal
Abstract
The binding abilities of two multidentate tripodal amine catechol ligands, cis,cis-1,3,5-tris[(2,3-dihydroxybenzylamino) aminomethyl]cyclohexane (TMACHCAT, $L^1)\;and\;N^1,N^3,N^5$-tris(2-(2,3-dihydroxybenzylamino) ethyl)cyclohexane-1,3,5-tricarboxamide (CYCOENCAT, $L^2$) with Ga(III) and In(III) have been investigated by potentiometric and spectrophotometric methods in an aqueous medium of 0.1 M KCl at 25 ${\pm}\;1\;{^{\circ}C}.$ The ligands $L^1\;and\;L^2$ formed various monomeric species $MLH_3,\;MLH_2$, MLH and ML (M = $Ga^{+3}\;and\;In^{+3}$) and showed potential to form strong encapsulated tris(catechol) type complexes. The coordination modes, binding ability and selectivity of the ligands towards Ga(III) and In(III) have been discussed with the help of experimental evidences, and supported with molecular modeling calculations.
Keywords
Tripodal amine-catechol ligand; Ga(III); In(III); Potentiometry; Spectrophotometry;
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