Termodynamic Study of the Interaction Between Some Recently Synthesized Benzo-Substituted Macrocyclic Diamides with Some Pyridinium Ion Derivatives in Acetonitrile Solution

• Autorzy: Ganjali, M.
• Języki publikacji: EN

Abstrakty

EN

The formation of pyridinium, 2-methyl pyridinium, 2,4-dimethyl pyridinium and 2,4,6- trimethyl pyridinium complexes with the some recently synthesized benzo-substituted macrocyclic diamides was investigated conductometrically in acetonitrile solution at various temperatures. The formation constants of the resulting 1:1 complexes were determined from the computer fitting of the molar conductance-mole ratio data. In all cases studied, the stability of complexes decreases in the order Py+ > 2m-Py+ > 2,4dim-Py+ > 2,4,6trim-Py+. The enthalpy and entropy of complexation reaction were determined from the temperature dependence of the formation constants. In all cases, the complexes were enthalpy stabilized but entropy destabilized.

Słowa kluczowe

EN

pyridium ion derivatives; macrocyclic ligands; complexation; conductance; thermodynamic parameters; acetonitrile

• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2001
• Tom: Vol. 75, nr 5
• Strony: 743-749

Twórcy

autor

Ganjali, M.

• Department of Chemistry, Tehran University, Tehran, Iran