Synthesis of O-Co-ordinated Platinum(II) Complexes of Carbonyl-stabilized Arsonium Ylides and the Mechanism of Conversion to their C-Co-ordinated Isomers

DOI: 10.1039/DT9930002871

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2871 - 2874 (1993)

Update date:2022-08-04

Topics:

Authors:

Facchin, Giacomo

Zanotto, Livio

Bertani, Roberta

Canovese, Luciano

Uguagliati, Paolo

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Article abstract of DOI:10.1039/DT9930002871

The reaction of <2>2 with ylides Ph3AsCHCOR (R = Me, Ph or OMe) led to novel platinum(II) complexes >BF4 (R = Me 1, Ph 2 or OMe 3) in which the carbonyl stabilized arsonium ylides are coordinated to the metal centre via the oxygen carbonyl atom.These derivatives are not stable in chlorinated solvents and slowly undergo isomerization to their C-co-ordinated analogues 4-6 following a first-order rate law.The mechanism proposed for this rearrangement implies both intramolecular and free-ylide promoted intermolecular paths with k_obs values of the whole process depending on the basicity of the ylide.

Full text of DOI:10.1039/DT9930002871

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Product name:{PtCl((C₆H₅)2PCH₂CH₂P(C₆H₅)2)(OC(CH₃)CH(As(C₆H₅)3))}⁽¹⁺⁾*BF₄^(1-)={PtCl((C₆H₅)2PCH₂CH₂P(C₆H₅)2)(OC(CH₃)CH(As(C₆H₅)3))}BF₄

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