Solvent Paths for Square-Planar Substitutions : Part 2. Reactions between Aqua Chloro-Platinates(II) and Ethene
(1980) In Inorganica Chimica Acta 38(1). p.59-66- Abstract
- The kinetics for the reactions between the complexes PtCln(H2O)4-n 2−n, n = 0,1,2,3,4, (including cis- and trans-isomers for n = 2) and ethene have been studied. In the case of trans-PtCl2(H2O)2, product analysis shows that both the chloride ligand and the aqua ligand are substituted by ethene in two parallel paths, differing in rate by a factor of 1.5 only. The experiments show that ethene, and probably olefins in general, are inefficient entering ligands, similar to dimethyl sulfoxide. Steric reasons might be responsible. Changes in relative cis- and trans-effects are compatible with an associative mechanism. The aqua complexes are sufficiently reactive with ethene to be steady-state intermediates in associative solvent paths. Reaction... (More)
- The kinetics for the reactions between the complexes PtCln(H2O)4-n 2−n, n = 0,1,2,3,4, (including cis- and trans-isomers for n = 2) and ethene have been studied. In the case of trans-PtCl2(H2O)2, product analysis shows that both the chloride ligand and the aqua ligand are substituted by ethene in two parallel paths, differing in rate by a factor of 1.5 only. The experiments show that ethene, and probably olefins in general, are inefficient entering ligands, similar to dimethyl sulfoxide. Steric reasons might be responsible. Changes in relative cis- and trans-effects are compatible with an associative mechanism. The aqua complexes are sufficiently reactive with ethene to be steady-state intermediates in associative solvent paths. Reaction models and rate laws for associative square-planar substitutions are discussed, with special reference to reported non-reactivity of solvento intermediates in some previously studied systems. (Less)
- Abstract (Swedish)
- The kinetics for the reactions between the complexes PtCln(H2O)4-n 2−n, n = 0,1,2,3,4, (including cis- and trans-isomers for n=2) and ethene have been studied. In the case of trans-PtCl2(H2O)2, product analysis shows that both the chloride ligand and the aqua ligand are substituted by ethene in two parallel paths, differing in rate by a factor of only 1.5. The experiments show that ethene, and probably olefins in general, are inefficient entering ligands, similar to dimethyl sulfoxide. Steric reasons might be responsible. Changes in relative cis- and trans-effects are compatible with an associative mechanism. The aqua complexes are sufficiently reactive with ethene to be steady-state intermediates in associative solvent paths. Reaction... (More)
- The kinetics for the reactions between the complexes PtCln(H2O)4-n 2−n, n = 0,1,2,3,4, (including cis- and trans-isomers for n=2) and ethene have been studied. In the case of trans-PtCl2(H2O)2, product analysis shows that both the chloride ligand and the aqua ligand are substituted by ethene in two parallel paths, differing in rate by a factor of only 1.5. The experiments show that ethene, and probably olefins in general, are inefficient entering ligands, similar to dimethyl sulfoxide. Steric reasons might be responsible. Changes in relative cis- and trans-effects are compatible with an associative mechanism. The aqua complexes are sufficiently reactive with ethene to be steady-state intermediates in associative solvent paths. Reaction models and rate laws for associative square-planar substitutions are discussed, with special reference to reported non-reactivity of solvento intermediates in some previously studied systems. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/ce40d49e-dfc6-47da-b8d4-d8d6a6c3fc0e
- author
- Elding, Lars Ivar LU and Gröning, Ann-Britt
- organization
- publishing date
- 1980
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Solvent path, Aqua chloro platinate, Substitution reactions, Reaction mechanism, Square-planar complex
- in
- Inorganica Chimica Acta
- volume
- 38
- issue
- 1
- pages
- 8 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:0002486091
- ISSN
- 0020-1693
- DOI
- 10.1016/S0020-1693(00)91935-2
- language
- English
- LU publication?
- yes
- id
- ce40d49e-dfc6-47da-b8d4-d8d6a6c3fc0e
- date added to LUP
- 2017-02-13 16:02:06
- date last changed
- 2021-01-03 08:55:58
@article{ce40d49e-dfc6-47da-b8d4-d8d6a6c3fc0e,
abstract = {{The kinetics for the reactions between the complexes PtCln(H2O)4-n 2−n, n = 0,1,2,3,4, (including cis- and trans-isomers for n = 2) and ethene have been studied. In the case of trans-PtCl2(H2O)2, product analysis shows that both the chloride ligand and the aqua ligand are substituted by ethene in two parallel paths, differing in rate by a factor of 1.5 only. The experiments show that ethene, and probably olefins in general, are inefficient entering ligands, similar to dimethyl sulfoxide. Steric reasons might be responsible. Changes in relative cis- and trans-effects are compatible with an associative mechanism. The aqua complexes are sufficiently reactive with ethene to be steady-state intermediates in associative solvent paths. Reaction models and rate laws for associative square-planar substitutions are discussed, with special reference to reported non-reactivity of solvento intermediates in some previously studied systems.}},
author = {{Elding, Lars Ivar and Gröning, Ann-Britt}},
issn = {{0020-1693}},
keywords = {{Solvent path; Aqua chloro platinate; Substitution reactions; Reaction mechanism; Square-planar complex}},
language = {{eng}},
number = {{1}},
pages = {{59--66}},
publisher = {{Elsevier}},
series = {{Inorganica Chimica Acta}},
title = {{Solvent Paths for Square-Planar Substitutions : Part 2. Reactions between Aqua Chloro-Platinates(II) and Ethene}},
url = {{http://dx.doi.org/10.1016/S0020-1693(00)91935-2}},
doi = {{10.1016/S0020-1693(00)91935-2}},
volume = {{38}},
year = {{1980}},
}