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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
|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.|
|Appears in Collections:||IJC-A Vol.30A(04) [April 1991]|
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