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Potentiometric Study of Binary and Mixed Complexes of Imidazole, Histamine, Histidine and Diacetyl Monooxime with Some Transition Metal Ions in Aqueous Solution
- Source :
- Iranian Journal of Chemistry & Chemical Engineering, Vol 20, Iss 1, Pp 22-28 (2001)
- Publication Year :
- 2001
- Publisher :
- Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR, 2001.
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Abstract
- The complexation reactions between diacetyl monooxime (Damo), imidazole (Him), histamine (Hist) and histidine (His) with Co2+, Ni2+ and Cu2+ were studied potentiometrically in aqueous solution at 25 °C and m= 0.5 M KNO3. The overall stability constants log b's of species were obtained by computer refinement of pH-volume data using BEST computer program. Several models were tested and, based on the lowest sFIT , the best one is accepted. The main species in binary complexes are MAH, MA2, MA2H, MA2H2, (in MA3 and MA4 A=Him), and for ternary complexes are MAB, MA2B, MAB2 and MABH. The D log KMAB and log XMAB were calculated for MAB mixed complexes. The order found for the resulting stability constants vary as Co2+ < Ni2+ < Cu2+.
Details
- Language :
- English
- ISSN :
- 10219986
- Volume :
- 20
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Iranian Journal of Chemistry & Chemical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.f0b061ed914d4f179b8cfc3ca431e146
- Document Type :
- article