Spectrophotometric Study on Adduct Formation Constants of Nickel(II) Chelates of Di(O-Tolylcarbazone) and Di(O-Tolylthiocarbazone) with Nitrogen Bases Using Job's Method of Continuous Variation Method

Authors

  • Shivaraj  Department of Chemistry, Vijayanagara Sri Krishnadevaraya University, Bellary, Karnataka, India
  • T. Suresh  Department of Chemistry, Vijayanagara Sri Krishnadevaraya University, Bellary, Karnataka, India

Keywords:

Stability constant, steric hindrance, adduct formation, di(o-tolylcarbazone), di(o-tolylthiocarbazone).

Abstract

Job's method of continuous variation technique was employed to determine the adduct formation constant of nickel(II) chelates of di(o-tolylcarbazone) and its sulphur analogue di(o-tolylthiocarbazone) with different nitrogen bases using UV-visible spectrophotometer at 25±0.10C in chloroform. Monodentate nitrogen bases were found to be form adducts in 1:2 ratio of nickel(II) chelate to nitrogen bases, whereas bidentate nitrogen bases form 1:1 adducts. The influence of substituents on the adduct formation constants has been examined with a view to better understanding of the effect of different organic nitrogen bases in the formation of adducts. The adducts formed have been discussed in terms of basicity of nitrogen bases, steric factors caused by substituents and donor atoms in nickel(II) chelates.

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International Journal of Scientific Research in Science and Technology

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Published

2017-12-31

Issue

Volume 3, Issue 8, November-December-2017

Section

Research Articles

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How to Cite

[1]
Shivaraj, T. Suresh, " Spectrophotometric Study on Adduct Formation Constants of Nickel(II) Chelates of Di(O-Tolylcarbazone) and Di(O-Tolylthiocarbazone) with Nitrogen Bases Using Job's Method of Continuous Variation Method , International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011, Volume 3, Issue 8, pp.1050-1057, November-December-2017.