Kinetic Studies of the Ligand Substitution Reaction of Some New Uranyl Schiff Base Complexes with Tri-n -butylphosphine

2013 ◽  
Vol 45 (12) ◽  
pp. 795-802 ◽  
Author(s):  
Zahra Asadi ◽  
Mozaffar Asadi ◽  
Fahimeh Dehghani Firuzabadi
Keyword(s):  
Schiff Base ◽  
Substitution Reaction ◽  
Kinetic Studies ◽  
Ligand Substitution ◽  
Schiff Base Complexes ◽  
Ligand Substitution Reaction

scholarly journals Physical properties, ligand substitution reactions, and biological activity of Co(iii)-Schiff base complexes

2019 ◽  
Vol 48 (18) ◽  
pp. 5987-6002 ◽  
Author(s):  
A. Paden King ◽  
Hendryck A. Gellineau ◽  
Samantha N. MacMillan ◽  
Justin J. Wilson
Keyword(s):  
Biological Activity ◽  
Schiff Base ◽  
Physical Properties ◽  
Ligand Exchange ◽  
Ligand Substitution ◽  
Schiff Base Complexes ◽  
Substitution Reactions ◽  
Anticancer Properties ◽  
Ligand Substitution Reactions

A subset of fluorinated Co(iii) Schiff base complexes was synthesized, and their structural, ligand exchange, and anticancer properties were investigated.

scholarly journals Kinetics and mechanism of formation of the complex [Ru(CN)5INH]3− through the ligand substitution reaction between the aquapentacyanoruthenate(II) anion and isoniazid

2019 ◽  
Vol 44 (3) ◽  
pp. 244-256
Author(s):  
Rupal Yadav ◽  
Radhey Mohan Naik
Keyword(s):  
Ionic Strength ◽  
Substitution Reaction ◽  
Ligand Substitution ◽  
Yellow Colour ◽  
First Order ◽  
Charge Transfer Transitions ◽  
Colour Product ◽  
Pseudo First Order ◽  
Experimental Findings ◽  
Ligand Substitution Reaction

The formation kinetics of the complex, [Ru(CN)5INH]3−, formed through the ligand substitution reaction between isoniazid (INH) and aquapentacyanoruthenate(II) ([Ru(CN)5H2O]3−), have been investigated, under pseudo first-order conditions, as a function of concentrations of [INH] and [Ru(CN)5H2O]3−, ionic strength and temperature at pH = 4.0 ± 0.02 in 0.2 M NaClO4 spectrophotometrically at 502 nm ( λmax of intense yellow colour product [Ru(CN)5INH]3−) corresponding to metal-to-ligand charge-transfer transitions, in aqueous medium. The pseudo first-order condition was maintained by taking at least 10% excess of [INH] over [Ru(CN)5H2O]3−. The stoichiometry of the reaction product was found to be 1:1 which was further supported and characterized using elemental analysis, infrared, nuclear magnetic resonance and mass spectrometric techniques. Thermodynamic and kinetic parameters have also been computed, using the Eyring equation, and the values of ΔH≠, Ea, ΔG≠ and ΔS≠ were found to be 47.3 kJ mol−1, 49.8 kJ mol−1, −8.62 kJ mol−1 and 187.6 J K−1mol−1, respectively. The reaction was found to obey first-order kinetics with respect to [INH]. It exhibited a negative salt effect on the rate upon variation of ionic strength of the medium. A tentative mechanistic scheme was proposed on the basis of experimental findings.

Sign in / Sign up

Export Citation Format

Share Document