Thermodynamics for complex formation between palladium(II) and
oxalate

J 2014

Thermodynamics for complex formation between palladium(II) and oxalate

PILNÝ, Radomír; Přemysl LUBAL a Lars Ivar ELDING

Základní údaje

Originální název

Thermodynamics for complex formation between palladium(II) and oxalate

Autoři

PILNÝ, Radomír; Přemysl LUBAL a Lars Ivar ELDING

Vydání

Dalton Transactions, Royal Society of Chemistry, 2014, 1477-9226

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.197

Kód RIV

RIV/00216224:14310/14:00078301

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1039/c4dt01062k

UT WoS

000339862000016

EID Scopus

2-s2.0-84904665681

Klíčová slova anglicky

palladium(II) ion; oxalate; metal complex formation; thermodynamics

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 4. 2015 22:34, Ing. Andrea Mikešková

Anotace

V originále

Complex formation between [Pd(H2O)4]2+ and oxalate (ox = C2O42-) has been studied spectrophoto-metrically in aqueous solution at variable temperature, ionic strength and pH. Thermodynamic parameters at 298.2 K and 1.00 M HClO4 ionic medium for the reaction [Pd(H2O)4]2+ + H2ox <-> [Pd(H2O)2(ox)] + H3O+ with equilibrium constant K1,H (in mol.dm-3) are log10K1,H = 3.38 ± 0.08, delta H0 = -33 +/- 3 kJ.mol-1, and deltaS0 = -48 +/- 11 J.K-1.mol-1, as determined from spectrophotometric equilibrium titrations at 15.0, 20.0, 25.0 and 31.0 degrees of Celsius. Thermodynamic overall stability constants Beta_n_0 (in (mol.dm-3)n) for [Pd(H2O)2(ox)] and [Pd(ox)2]2- at zero ionic strength and 298.2 K, defined as the equilibrium constants for the reaction Pd2+ + n ox2- <-> [Pd(ox)n]2-2n (water molecules omitted) are log10Beta_1 = 9.04 ± 0.06 and log10Beta_ = 13.1 +/- 0.3, respectively, calculated by use of Specific Ion Interaction Theory from spectrophotometric titrations with initial hydrogen ion concentrations of 1.00, 0.100 and 0.0100 mol.dm-3 and ionic strengths of 1.00, 2.00 or 3.00 mol.dm-3. The palladium complexes are significantly more stable than oxalato complexes of other divalent metals with higher co-ordination numbers as a result of the chelate effect.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

Citovat

PILNÝ, Radomír; Přemysl LUBAL a Lars Ivar ELDING. Thermodynamics for complex formation between palladium(II) and oxalate. Dalton Transactions. Royal Society of Chemistry, 2014, roč. 43, č. 32, s. 12243-12250. ISSN 1477-9226. Dostupné z: https://doi.org/10.1039/c4dt01062k.

@article{1216445,
   author = {Pilný, Radomír and Lubal, Přemysl and Elding, Lars Ivar},
   article_number = {32},
   doi = {https://doi.org/10.1039/c4dt01062k},
   keywords = {palladium(II) ion; oxalate; metal complex formation; thermodynamics},
   language = {eng},
   issn = {1477-9226},
   journal = {Dalton Transactions},
   title = {Thermodynamics for complex formation between palladium(II) and oxalate},
   url = {http://pubs.rsc.org/en/content/articlelanding/2014/dt/c4dt01062k},
   volume = {43},
   year = {2014}
}

TY  - JOUR
ID  - 1216445
AU  - Pilný, Radomír - Lubal, Přemysl - Elding, Lars Ivar
PY  - 2014
TI  - Thermodynamics for complex formation between palladium(II) and oxalate
JF  - Dalton Transactions
VL  - 43
IS  - 32
SP  - 12243-12250
EP  - 12243-12250
PB  - Royal Society of Chemistry
SN  - 14779226
KW  - palladium(II) ion
KW  - oxalate
KW  - metal complex formation
KW  - thermodynamics
UR  - http://pubs.rsc.org/en/content/articlelanding/2014/dt/c4dt01062k
N2  - Complex formation between [Pd(H2O)4]2+ and oxalate (ox = C2O42-) has been studied spectrophoto-metrically in aqueous solution at variable temperature, ionic strength and pH. Thermodynamic parameters at 298.2 K and 1.00 M HClO4 ionic medium for the reaction [Pd(H2O)4]2+ + H2ox <-> [Pd(H2O)2(ox)] + H3O+ with equilibrium constant K1,H (in mol.dm-3) are log10K1,H = 3.38 ± 0.08, delta H0 = -33 +/- 3 kJ.mol-1, and deltaS0 = -48 +/- 11 J.K-1.mol-1, as determined from spectrophotometric equilibrium titrations at 15.0, 20.0, 25.0 and 31.0 degrees of Celsius. Thermodynamic overall stability constants Beta_n_0 (in (mol.dm-3)n) for [Pd(H2O)2(ox)] and [Pd(ox)2]2- at zero ionic strength and 298.2 K, defined as the equilibrium constants for the reaction Pd2+ + n ox2- <-> [Pd(ox)n]2-2n (water molecules omitted) are log10Beta_1 = 9.04 ± 0.06 and log10Beta_ = 13.1 +/- 0.3, respectively, calculated by use of Specific Ion Interaction Theory from spectrophotometric titrations with initial hydrogen ion concentrations of 1.00, 0.100 and 0.0100 mol.dm-3 and ionic strengths of 1.00, 2.00 or 3.00 mol.dm-3. The palladium complexes are significantly more stable than oxalato complexes of other divalent metals with higher co-ordination numbers as a result of the chelate effect.
ER  -

PILNÝ, Radomír; Přemysl LUBAL a Lars Ivar ELDING. Thermodynamics for complex formation between palladium(II) and oxalate. \textit{Dalton Transactions}. Royal Society of Chemistry, 2014, roč.~43, č.~32, s.~12243-12250. ISSN~1477-9226. Dostupné z: https://doi.org/10.1039/c4dt01062k.

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