STUDIES ON THE BINARY AND TERNARY COMPLEXES OF ALUMINIUM(III) WITH GALLIC ACID AND ADRENALINE
MOUSTAFA, M. (2010). STUDIES ON THE BINARY AND TERNARY COMPLEXES OF ALUMINIUM(III) WITH GALLIC ACID AND ADRENALINE. EKB Journal Management System, 21(Issue 2-A), 295-308. doi: 10.21608/absb.2010.7383
MAHMOUD HASSAN MOUSTAFA. "STUDIES ON THE BINARY AND TERNARY COMPLEXES OF ALUMINIUM(III) WITH GALLIC ACID AND ADRENALINE". EKB Journal Management System, 21, Issue 2-A, 2010, 295-308. doi: 10.21608/absb.2010.7383
MOUSTAFA, M. (2010). 'STUDIES ON THE BINARY AND TERNARY COMPLEXES OF ALUMINIUM(III) WITH GALLIC ACID AND ADRENALINE', EKB Journal Management System, 21(Issue 2-A), pp. 295-308. doi: 10.21608/absb.2010.7383
MOUSTAFA, M. STUDIES ON THE BINARY AND TERNARY COMPLEXES OF ALUMINIUM(III) WITH GALLIC ACID AND ADRENALINE. EKB Journal Management System, 2010; 21(Issue 2-A): 295-308. doi: 10.21608/absb.2010.7383

STUDIES ON THE BINARY AND TERNARY COMPLEXES OF ALUMINIUM(III) WITH GALLIC ACID AND ADRENALINE

Al-Azhar Bulletin of Science
Article 22, Volume 21, Issue 2-A, December 2010, Page 295-308  XML PDF (197.19 K)
Document Type: Original Article
DOI: 10.21608/absb.2010.7383
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Author
MAHMOUD HASSAN MOUSTAFA email
Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut, Egypt
Abstract
The reaction of aluminium(III) ions with gallic acid (3,4,5–trihydroxybenzoic acid) (GAL) and adrenaline (epinephrine) (1-(3,4–dihydroxyphenyl)-2–methylaminoethanol) (ADR) was investigated by potentiometric and optical means. Stability constants of the binary and ternary complexes at 25°C and in 0.1 M NaNO3 ionic strength in aqueous solution have been determined. The complex formation equilibria involving adrenaline were characterized
The constant due to is 0.75. The results indicate that the overall ratio of the ternary complex Al(GAL)(ADR) is 1:1:1 and the mixed-ligand complex is more stable than one expected from purely statistical reasons. UV-Vis spectroscopy gave additional support to the results.
Keywords
Mixed-ligand Complexes; aluminium; Gallic acid; L-adrenaline; Complexation equilibria; Stability constants; Spectral; Potentiometry
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