Synthesis and structure of novel [Ph(RO)PSe2](-) complexes

I P Gray, A M Z Slawin, J D Woollins

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48 Citations (Scopus)

Abstract

Reaction of (PhPSe2)(2) (Woollins reagent) with NaOR (R = Me, Et, Pr-i) gives the non-symmetric phosphonodiselenoato anions [Ph(RO) PSe2](-) which can be complexed to a range of metals. The nickel complex Ni[Ph(MeO) PSe2](2) adopts a square-planar ML2 structure while the cadmium complex Cd[Ph(MeO) PSe2](2) displays a dimeric M2L4 structure. Two different lead complexes are observed, one consisting of PbL2 units joined by Pb center dot center dot center dot Se interactions to form distinct dimeric pairs. The other displays a novel dimeric structure built around a central four-membered Pb2Se2 ring. All new compounds have been characterised spectroscopically (P-31, H-1, C-13 NMR, IR, mass spectroscopy), by elemental analysis and five demonstrative X-ray structures are reported.

Original languageEnglish
Pages (from-to)2188-2194
Number of pages7
JournalDalton Transactions
Issue number12
DOIs
Publication statusPublished - 2005

Keywords

  • RAY CRYSTAL-STRUCTURE
  • CU-8(I) CUBIC CLUSTERS
  • LAWESSONS REAGENT
  • DISELENOPHOSPHATE LIGANDS
  • COORDINATION CHEMISTRY
  • METAL-COMPLEXES
  • RARE EXAMPLE
  • PR-I
  • PHOSPHORUS
  • SELENIUM

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