| Autor: |
Boulefred, Soumia, Chiboub-Fellah, Abdelghani, Chiboub-Fellah, Fatema Zohra, Khan, Mustayeen Ahmed |
| Zdroj: |
Advanced Materials Research; August 2011, Vol. 324 Issue: 1 p170-173, 4p |
| Abstrakt: |
Cobalt(II) chlorocomplexes were studied in a polar protic solvent namely methanol at 25°C. The spectrophotometric technique in the visible region was used. The studied equilibrium is: Co2+ + j Cl- CoClj ↔ (j-2)-. Formation of three chlorocomplexes and a structural modification (Oh → Td) were obtained from recorded spectra analysis. The stability of CoCl+ was studied by the graphical method of Kruh and the overall stability constants were calculated with the SIRKO program based on the least-square method. Different models were tested and the model was retained for which the best values are: log β1 = 0.92, log β2 = 1.31 and log β3 = 1.08. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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