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Title: Potentiometric studies of Ni(II), Co(II) and Zn(II) metal ions with salicyloyl hydrazide and some O-O, N-N and N-O donor ligands
Authors: Reddy, C Narsimha
Devi, Ch Sarala
Reddy, M G Ram
Issue Date: Aug-1993
Publisher: NISCAIR-CSIR, India
Abstract: Binary and ternary complexes of Ni(II), Co(II), Zn(II) metal ions with salicyloyl hydrazide (SAH) and alanine (ala), catechol (cat), 2,2'-bipyridyl (2,2'-bipy) and ethylenediamine (en) have been studied in solution by potentiometric technique at 30ᵒC and at ionic strength of 0.1 M (KNO3). The tridentate nature of salicyloyl hydrazide is established and this is further confirmed by IR studies of solid Ni(II)-SAH complex prepared. The stabilities in ternary complexes have been discussed in terms of ligand-ligand interactions, steric statistical and charge neutralization factors. The stabilisation is expressed in terms of log K. The log K values and percentage species computed gave parallel evidence for the stabilisation of ternary complexes.
Page(s): 732-735
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.32A(08) [August 1993]

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