Substitution Kinetics of and

DOI: 10.1039/DT9860002145

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2145 - 2148 (1986)

Update date:2022-08-03

Topics:

Authors:

Dahlinger, Karl

Poe, Anthony J.

Sayal, Pardeep K.

Sekhar, Vasu C.

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Article abstract of DOI:10.1039/DT9860002145

The kinetics of reactions of and with P- or As-donor ligands in p-xylene or toluene have been studied and shown to be characteristic of reversible dissociative processes.In both cases MeCN is ca. 10 times more nucleophilic towards the reactive intermediate than is PPh3.Activation parameters confirm the weakness of the Os-NCMe bonds and suggest that loss of the first MeCN from may be a concerted process in which a 'sideways on' bridging CO replaces the leaving MeCN.The strength of bridge bonding can be estimated to be >= 30kJmol^-1.

Full text of DOI:10.1039/DT9860002145

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