Title of article
Interaction of Thallium (I) with Cytidine 5-Monophosphate in Different Ionic Strengths and Various Media
Author/Authors
Kiani, Farhoush Chemistry Department - Ayatollah Amoli Branch Islamic Azad University, Amol , Gharib, Farrokh Chemistry Department - Shahid Beheshti University, Tehran
Pages
9
From page
111
To page
119
Abstract
The formation constants of the species formed in the systems H+ + cytidine 5-monophosphate (CMP) and H+ + cytidine 5-monophosphate + Tl (I) ion have been determined in aqueous solution in a wide pH range of 1.5 to 10.5 at 25 °C and different ionic strengths ranging from 0.1 to 1.5 moldm-3 NaClO4, NaNO3, and NaCl using potentiometric-spectrophotometric technique. The composition of the complexes was specified and was shown that thallium ion forms mononuclear two 1:1 complexes with CMP. The general trend for the protonation constants of CMP and its complexes with thallium (I) are in the order of NaClO4> NaNO3> NaCl in different ionic media. The dependence of formation
constants on ionic strength are described by a Debye-Huckel type equation and interpreted for the various supporting electrolytes.
Keywords
CMP , Tl(I) , Protonation , complexation constants , Ionic strength , Salt effect
Journal title
Astroparticle Physics
Serial Year
2014
Record number
2422753
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