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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 9
BKCSDE 30(9)
September 20, 2009 

Potentially Multidentate Tripodal Amine Catechol Ligands as Chelators for Ga(III) and In(III)
Suban K Sahoo*, Minati Baral, Rati Kanta Bera, B K Kanungo*
Tripodal amine-catechol ligand, Ga(III), In(III), Potentiometry, Spectrophotometry
The binding abilities of two multidentate tripodal amine catechol ligands, cis,cis-1,3,5-tris[(2,3-dihydroxybenzylamino) aminomethyl]cyclohexane (TMACHCAT, L1) and N1,N3,N5-tris(2-(2,3-dihydroxybenzylamino) ethyl)cyclohexane-1,3,5-tricarboxamide (CYCOENCAT, L2) 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 ± 1 oC. The ligands L1 and L2 formed various monomeric species MLH3, MLH2, 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.
1956 - 1962
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