Kinetics and equilibria for complex formation between palladium(II) and chloroacetate

LUBAL, Přemysl and Lars-Ivar ELDING. Kinetics and equilibria for complex formation between palladium(II) and chloroacetate. Journal of Solution CHemistry. NEW YORK, USA: SPRINGER/PLENUM PUBLISHERS, 2006, vol. 35, No 5, p. 769-781, 14 pp. ISSN 0095-9782.

Basic information

Original name

Kinetics and equilibria for complex formation between palladium(II) and chloroacetate

Name in Czech

Studium kinetiky a rovnováh tvorby komplexů mezi Pd(II) a chloroacetátem

Authors

LUBAL, Přemysl (203 Czech Republic, guarantor) and Lars-Ivar ELDING (752 Sweden)

Edition

Journal of Solution CHemistry, NEW YORK, USA, SPRINGER/PLENUM PUBLISHERS, 2006, 0095-9782

---

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.026

RIV identification code

RIV/00216224:14310/06:00031856

Organization unit

Faculty of Science

UT WoS

000239310700009

Keywords in English

palladium(II); chloroacetic acid; equilibrium; kinetics; thermodynamic and activation parameters; LFER

Tags

chloroacetic acid, equilibrium, kinetics, LFER, palladium(II), thermodynamic and activation parameters

Tags

International impact, Reviewed

---

Abstract

V originále

Kinetics and equilibria for the formation of a 1:1 complex between palladium(II) and chloroacetate were studied by spectrophotometric measurements in 1.00 mol.dm-3 HClO4 at 298.2 K. The equilibrium constant, K, of the reaction Pd2+ + HL <=> PdL+ + H+ was determined from multi-wavelength absorbance measurements of equilibrated solutions at variable temperatures and spectra of individual species were calculated. Variable-temperature kinetic measurements gave rate constants for the forward and backward reactions at 298.2 K and ionic strength 1.00 mol. dm-3. From the kinetics of the forward and reverse processes, log(10) K = 0.346 +/- 0.007, Delta H_0 = -7.9 +/- 0.9 kJ.mol-1 and Delta S_0 = - 19.8 +/- 3.0 J.K-1.mol-1 were derived, and these values are in good agreement with the results of the equilibrium measurements. The Specific Ion Interaction Theory was employed for determination of thermodynamic equilibrium constants for the protonation of chloroacetate.

In Czech

Kinetika a rovnováhy pro vznik 1:1 komplexu mezi Pd(II) a chloroacetátem byly studovány pomocí spektrofotometrie v 1,00 mol.dm-3 HClO4 při 298.2 K. Rovnovážná konstanta, K, reakce Pd2+ + HL <=> PdL+ + H+ byla stanovena z měření absorbance při různých vlnových délkách a teplotách a jednotlivé spektrální profily byly vypočteny. Kinetická měření při různých teplotách poskytly hodnoty rychlostních konstant pro obě reakce při 298.2 K a iontové síle 1.00 mol.dm-3. Z kinetiky obou reakcí, log(10) K = 0.346 +/- 0.007, Delta H_0 = -7.9 +/- 0.9 kJ.mol-1 a Delta S_0 = - 19.8 +/- 3.0 J.K-1.mol-1 byly vypočteny, a tyto hodnoty jsou v dobré shodě s výsledky rovnovážných měření.