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Title: Formation constants of binary and ternary complexes of Cu(II) with ninhydrin and some O,O; N, and N, N donor ligands in aqueous medium
Authors: Reddy, Ch Venkata Ramana
Devi, Ch Sarala
Reddy, M G Ram
Issue Date: Apr-1991
Publisher: NISCAIR-CSIR, India
Abstract: The formation constants of 1:1 and 1:2 binary chelates of Cu(II) with ninhydrin (1,2,3-triketohydrindene hydrate or 2,2-dihydroxy-1,3-indamedione) and the corresponding 1: 1: 1 ternary chelates involving oxalic acid, catechol, α-alanine, valine, ethylenediamine and 2,2-bipyridyl as primary Iigands have been determined pH metrically at 20°, 30°, 40°· and 50°C at 0.1 M (KNO3) ionic strength. The effect of change in ionic strength has also been studied at 30°C. The order of stabilities of, ternary complexes has been discussed in terms of ∆ log K, basicity of the Iigands, nature of donor sites and thermodynamic parameters.
Page(s): 385-386
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.30A(04) [April 1991]

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