This paper is published in Volume-2, Issue-6, 2016
Area
Inorganic Chemistry
Author
Uma Desai, Suresh
Org/Univ
Ballari Institute of Technology & Management, Ballari, Karnataka, India
Keywords
Metal-coumarin & substituted coumarin Schiff base complexes, Stability constants.
Citations
IEEE
Uma Desai, Suresh. Physicochemical Studies on Schiff Bases Derived from Substituted Coumarins with Substituted Diamines in Aqueous-Alcohol Medium, International Journal of Advance Research, Ideas and Innovations in Technology, www.IJARIIT.com.
APA
Uma Desai, Suresh (2016). Physicochemical Studies on Schiff Bases Derived from Substituted Coumarins with Substituted Diamines in Aqueous-Alcohol Medium. International Journal of Advance Research, Ideas and Innovations in Technology, 2(6) www.IJARIIT.com.
MLA
Uma Desai, Suresh. "Physicochemical Studies on Schiff Bases Derived from Substituted Coumarins with Substituted Diamines in Aqueous-Alcohol Medium." International Journal of Advance Research, Ideas and Innovations in Technology 2.6 (2016). www.IJARIIT.com.
Uma Desai, Suresh. Physicochemical Studies on Schiff Bases Derived from Substituted Coumarins with Substituted Diamines in Aqueous-Alcohol Medium, International Journal of Advance Research, Ideas and Innovations in Technology, www.IJARIIT.com.
APA
Uma Desai, Suresh (2016). Physicochemical Studies on Schiff Bases Derived from Substituted Coumarins with Substituted Diamines in Aqueous-Alcohol Medium. International Journal of Advance Research, Ideas and Innovations in Technology, 2(6) www.IJARIIT.com.
MLA
Uma Desai, Suresh. "Physicochemical Studies on Schiff Bases Derived from Substituted Coumarins with Substituted Diamines in Aqueous-Alcohol Medium." International Journal of Advance Research, Ideas and Innovations in Technology 2.6 (2016). www.IJARIIT.com.
Abstract
Schiff bases derived from substituted coumarins with substituted diamines were synthesized by cyclo-condensation. Proton-ligand ionization constants and metal-ligand stability constants at constant ionic strength in aqueous-alcohol medium (50/50% V/V) were evaluated using Irving-Rossotti method. The ligands exhibit pKa values around 11.5 due to the phenolic –OH group. The metal ligand stability constants with Cu (II), Co(II), Ni(II), Zn(II), Cd(II) and Hg(II) were also determined. The effects of substitutions on the stability constants were studied.
