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Palladium(II) Halid...
Palladium(II) Halide Complexes II. Acid Hydrolysis and Halide Anations of Palladium(II) Chloro and Bromo Aqua Complexes
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- Elding, Lars Ivar (författare)
- Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- 1972
- 1972
- Engelska 7 s.
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Ingår i: Inorganica Chimica Acta. - 0020-1693. ; 6, s. 683-688
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The rate constants for the chloride and bromide anations of Pd(H2O)42+, the chloride anations of PdCl3H2O−, the bromide anation of PdBr3H2O− and the acid hydrolysis of PdCl(H2O)3+, PdBr(H2O)3+, PdCl42−, and PdBr42− have been determined at 15, 25 and 35 °C using a stopped-flow technique. The ionic strength was 1.00 M and the supporting electrolyte perchloric acid. The obtained rate constants and the activation enthalpies and entropies are given. A comparison with the corresponding reactions for platinum(II) complexes indicates that the acid hydrolyses are 1×105 to 2×105 times faster and the halide anations 4×101 to 6×104 times faster for palladium. The increased rates of reaction are due to a decrease in activation enthalpies. The reactions are typically square planar substitutions with respect to entering and leaving groups. The mechanism appears to be associative in nature.
- The rate constants for the chloride and bromide anations of Pd(H2O)42+, the chloride anations of PdCl3H2O−, the bromide anation of PdBr3H2O− and the acid hydrolysis of PdCl(H2O)3+, PdBr(H2O)3+, PdCl42−, and PdBr42− have been determined at 15, 25 and 35 °C using a stopped-flow technique. The ionic strength was 1.00 M and the supporting electrolyte perchloric acid. The obtained rate constants and the activation enthalpies and entropies are given. A comparison with the corresponding reactions for platinum(II) complexes indicates that the acid hydrolyses are 1×105 to 2×105 times faster and the halide anations 4×101 to 6×104 times faster for palladium. The increased rates of reaction are due to a decrease in activation enthalpies. The reactions are typically square planar substitutions with respect to entering and leaving groups. The mechanism appears to be associative in nature.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- Acid hydrolysis
- Halide anation
- Palladium(II) complexes
- Stopped-flow kinetics
- Activation parameters
- Associative reactions
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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