Sharif University of Technology Scientia Iranica 1026-3098 16 2 2009 12 01 Spectroscopic and Thermodynamic Studies of Interaction Between Dopamine and Cobalt(III) Schi-Base Complexe 3265 EN D.M. Boghaei Department of Chemistry,Sharif University of Technology Journal Article 2010 05 12 In this paper, the interactions of cobalt(III) tetradentate Schi-base complexes, [Co(3- MeO-salophen)]ClO4, (1), [Co(5-NO2-salophen)]ClO4, (2), and [Co(5-Br-salophen)]ClO4, (3), with dopamine, an important neurotransmitter, have been investigated. The formation and kinetic constants for complex formation of [Co(3-MeO-salophen)]ClO4, (1), with dopamine were determined spectrophotometrically in H2O/EtOH solution (4:1) at 30 C by using the Benesi-Hildbrand and Guggenheim equations, respectively. The stoichiometry has been found to be 1:1. The rate and equilibrium constants for the coordination of dopamine to [Co(3-MeO-salophen)]ClO4 were found to be 0.0053 min????1 and 1600 dm3 mol????1, respectively. https://scientiairanica.sharif.edu/article_3265_001e6109bafa3422e392c8892a376ff4.pdf