The effect of a solvent on complexation of Zn porphyrinates with pyridine

The effect of a solvent on complexation of Zn porphyrinates with pyridine Spectrophotometric titration was used to study complexation reactions of Zn 2,3,7,8,12,13,17,18-octaethylporphyrinate and Zn 5,10,15,20-tetraphenylporphyrinate with pyridine in binary solvents toluenemethanol and toluene-ethanol at different alcohol concentrations at 20°C. Capability of both porphyrinates to give complexes with pyridine in a binary solvent, i.e., toluene-monobasic alcohol, was found to decrease by more than one order of magnitude as the alcohol concentration increased from 0 to 1 mole fraction. The effect of the solvent polarity and extent of its association due to hydrogen bonds on the complexing capability of both porphyrinates was discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Coordination Chemistry Springer Journals

The effect of a solvent on complexation of Zn porphyrinates with pyridine

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2006 by Pleiades Publishing, Inc.
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry
ISSN
1070-3284
eISSN
1608-3318
D.O.I.
10.1134/S1070328406100101
Publisher site
See Article on Publisher Site

Abstract

Spectrophotometric titration was used to study complexation reactions of Zn 2,3,7,8,12,13,17,18-octaethylporphyrinate and Zn 5,10,15,20-tetraphenylporphyrinate with pyridine in binary solvents toluenemethanol and toluene-ethanol at different alcohol concentrations at 20°C. Capability of both porphyrinates to give complexes with pyridine in a binary solvent, i.e., toluene-monobasic alcohol, was found to decrease by more than one order of magnitude as the alcohol concentration increased from 0 to 1 mole fraction. The effect of the solvent polarity and extent of its association due to hydrogen bonds on the complexing capability of both porphyrinates was discussed.

Journal

Russian Journal of Coordination ChemistrySpringer Journals

Published: Oct 7, 2006

References

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