Thermodynamics of Complexation of 3,6-Dihydroxypyridazine with Manganese-, Cobalt-, Nickel-, Copper- and Zinc(II) Ions in 30% DMSO Media
| Main Authors: | P. K. SAHU, N. R. BANNERJEE, SANJAY SENGUPTA |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1992
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5994269 |
Daftar Isi:
- Department of Chemistry, University of Delhi, Delhi-110 007 Manuscript received 26 February 1991, revised 19 August 1991, accepted 19 March 1992 Crow's mean diffusion coefficient method applied to diffusion currents in the polarographic study of complexes of MnII CoIl NiII. CuI and ZnII with 3,6-dihydroxypyridazine yielded the following log K1 and log K2 values (298 K) : MnII 7.77 2.32 ; CoII 7.20, 3 74 , NiII 6 60 4.11 , Cull 10 48, 2.67 ZnII 4.85, 3.62. The overall stability constants followed Irving-Williams natural order Thermodynamic parameters ΔG, ΔH and ΔS values in the range 288 — 308 K were all negative, proving the formation of strong complexes with greater order in their molecules.