| Autor: |
Corcoran, Alena M., Haines, Robert I. |
| Předmět: |
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| Zdroj: |
Inorganic Reaction Mechanisms (De Gruyter); 2006, Vol. 6 Issue 2, p83-89, 7p, 1 Diagram, 2 Charts |
| Abstrakt: |
The binuclear complex bis-(chloropalladium(II))-tetrakis(2-pyridyl)pyrazine chloride, [Pd2Cl2(tppz)]Cl2 has been synthesized and characterized. The complex shows soivatochromic behaviour in aqueous DMSO solvent mixtures. The kinetics of nucleophilic substitution of the complex by guanine is reported in 20% by volume aqueous DMSO. Only mono-substitution is observed, the dominant pathway being disscciative in nature. Temperature dependent studies give activation enthalpy and entropy values ΔH‡ = 62.1 ± 3.5 kJ mol-1 and ΔS‡ = -67 ± 10 J.K-1mol-1. The reaction is completely suppressed in the presence of added chloride. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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