Speciation of complexes of CaII, MgII and ZnII with 1,10-phenanthroline in dioxan-water mixtures
| Main Authors: | K. V. Santhee Devi, B. Rama Raju, G. Nageswara Rao |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2011
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5767322 |
Daftar Isi:
- School of Chemistry, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, Ind1a E-mail : gollapallinr@yahoo.com Manuscript received 09 February 2010, revised 02 July 2010, accepted 30 July 2010 Complexation between essential metal ions and 1,10-phenanthrolinc was studied by monitoring hydrogen ion concentration pH metrically at 303 K and at an ionic strength of 0.16 mol dm-3. The existence of various binary spccies was established from modeling studies using the computer program MINIQUAD75. The best lit chemical models were selected based on the statistical parameters like crystallographic 'R' factor and .,um of squares of residuals in mass-balance equations. The formation and distribution of different species with relative concentrations (M : L = 1 : 2.5, 1 : 3.75 and 1 : 5) of metals and ligand, with varying pll was represented in the form of distribution diagrams. Innuence of the solvent on the speciation was discussed based on the dielectric constant of the medium.