Thermodynamics of metal cyanide co-ordination. Part VII. Log K, ΔH°, and ΔS° values for the interaction of CN–with Pd2+. ΔH° values for the interaction of Cl–and Br–with Pd2+
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1304-1308
- https://doi.org/10.1039/j19670001304
Abstract
Values of ΔG°, ΔH°, and ΔS° have been determined for the reactions Pd2++ 4CN–= Pd(CN)4 2–, and Pd(CN)4 2–+ CN–= Pd(CN)5 3– at 25° and zero ionic strength to be –57·8 kcal./mole, –92·3 kcal./mole, –116 cal./deg.-mole and –3·9 kcal./mole, –0·2 kcal./mole, 7·8 cal./deg.-mole, respectively. ΔH° values at 25° and 0·10 ionic strength for the reaction Pd2++ 4X–= PdX4 2–(X = Cl or Br) are –5·5 and –13·1 kcal./mole, respectively, and for the reaction Pd2++ 31–= Pd(s)+ I3 – is –24·9 kcal./mole. From this last value the calculated entropy of the aqueous Pd2+ ion is 11·1 cal./deg.-mole.Keywords
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