Croatica Chemica Acta, Vol. 74 No. 3, 2001.
Original scientific paper
Effect of Some Macrocyclic Ligands on the Rate of Reduction of Perchlorate Ion by Titanium(III)
Giulio A. Amadei
; Department of Chemistry, Georgetoivn University, Washington DC 20057, USA
Joseph E. Earley, Sr.
; Department of Chemistry, Georgetoivn University, Washington DC 20057, USA
Abstract
Complexation with cyclam increases the rate of reduction of perchlorate ion by TiIII (in acidic, aqueous, 4 mol dm-3 LiCl Solutions at 25 °C) relative to the rate of the corresponding reduction of Ti3+. A modified cyclam with pendant amine and p-aminobenzyl functional groups is more effective in this regard than is cyclam itself. Both redox reactions are acid catalyzed. The data is consistent with involvement of an intermediate containing two TiIII centers.
Keywords
titanium(III); perchlorate; perchlorate-reduction; cyclam; catalysis; kinetics; dinuclear intermediate; macrocyclic ligands; titanous ion
Hrčak ID:
131869
URI
Publication date:
1.8.2001.
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