Ligand functionalization, reactivity, and transformation at the selenide centers of [Pt₂(μ-Se)₂(PPh₃)₄] with organic halides
Citation
Export citationYeo, J. S. L., Vittal, J. J., Henderson, W. & Hor, T. S. A. (2002). Ligand functionalization, reactivity, and transformation at the selenide centers of [Pt₂(μ-Se)₂(PPh₃)₄] with organic halides. Journal of Organometallics, 21(14), 2944-2949.
Permanent Research Commons link: https://hdl.handle.net/10289/2886
Abstract
The selenium centers of [Pt₂(μ-Se)₂(PPh₃)₄] are subject to electrophilic attack from various organic halides. Reactions with MeI, n-BuCl, α,α⁶-dichloro-p-xylene, and α,α⁶-dichloro-o-xylene give [Pt₂(μ-Se)(μ-SeMe)(PPh₃)₄]⁺, [Pt₂(μ-Se)(μ-SeBu)(PPh₃)₄]⁺, [Pt₂(μ-Se)(μ-SeCH₂C₆H₄CH₂Cl)(PPh₃)₄]⁺, and [Pt₂(μ-SeCH₂C₆H₄CH₂Se)(PPh₃)₄]²⁺, respectively, preserving the dinuclear core and giving rise to new selenium-derivatized ligand complexes. Reaction with oxalyl chloride gives [Pt(η²-Se₂C₂O₂-Se,Se⁶)(PPh₃)₂], leading to the disintegration of the core to a mononuclear complex supported by a new chelating selenium donor ligand. Reactions with malonyl chloride and succinyl chloride give [(COCH₂COCl)Se]₂ and [(COCH₂CH₂COCl)Se]₂ respectively, leading to complex disintegration and liberation of new selenium materials. The crystal structures of the aggregates [Pt₂(μ-Se)(μ-SeMe)(PPh₃)₄][PF₆], [Pt₂(μ₃-Se)₂(PPh₃)₄(CH₂C₆H₄CH₂)][PF₆]₁.₂₅[Cl]₀.₇₅, and [Pt(η²-Se₂C₂O₂-Se,Se⁶)(PPh₃)₂] are described. The potential of using [Pt₂(μ-Se)₂(PPh₃)₄] as a source for metal-assisted synthesis of new and unusual organoselenium compounds is discussed.
Date
2002Type
Publisher
American Chemical Society
Rights
This article is published in the Journal of Organometallics. (c) 2002 American Chemical Society