Synthesis and characterisation of triselenocarbonate [CSe3](2-) complexes

C J Burchell, S M Aucott, A M Z Slawin, J D Woollins

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9 Citations (Scopus)

Abstract

Pt(CSe3) (PR3)(2)] (PR3 = PMe3, PMe2Ph, PPh3, P(p-tol)(3), 1/2 dppp, 1/2 dppf) were all obtained by the reaction of the appropriate metal halide containing complex with carbon diselenide in liquid ammonia. Similar reaction with [Pt(Cl)(2)(dppe)] gave a mixture of triselenocarbonate and perselenocarbonate complexes. [{Pt(mu-CSe3) (PEt3)}(4)] was formed when the analogous procedure was carried out using [Pt(Cl)(2)(PEt3)(2)]. Further reaction of [Pt(CSe3) ( PMe2Ph)(2)] with [M(CO)(6)] (M = Cr, W, Mo) yielded bimetallic species of the type [Pt(PMe2Ph)(2)(CSe3) M(CO)(5)] (M = Cr, W, Mo). The dimeric triselenocarbonate complexes [M {(CSe3) (eta(5)-C5Me5)}(2)] (M = Rh, Ir) and [{M(CSe3) (eta(6)-p-MeC6H4 Pr-i)}(2)] (M = Ru, Os) have been synthesised from the appropriate transition metal dimer starting material. The triselenocarbonate ligand is Se, Se bidentate in the monomeric complexes. In the tetrameric structure the exocyclic selenium atoms link the four platinum centres together.

Original languageEnglish
Pages (from-to)735-739
Number of pages5
JournalDalton Transactions
Issue number4
DOIs
Publication statusPublished - 2005

Keywords

  • X-RAY STRUCTURE
  • LIQUID-AMMONIA
  • CRYSTAL-STRUCTURE
  • CARBON DISELENIDE
  • METAL-COMPLEXES
  • ANIONS
  • PENTACARBONYLCHROMIUM(0)
  • DISULFIDE
  • PLATINUM

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