The preparation and structure of [Pt(S2N2){P(OR)(n)R '(3-n)}(2)] and [Pt(SeSN2){P(OMe)(n)Ph3-n}(2)] (n=0-3)

Paul G. Waddell, Alexandra M. Z. Slawin, Nicolas Sieffert, Michael Buehl, J. Derek Woollins

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Dissolution of [S4N3]Cl in liquid ammonia produces a reactive solution which on treatment with cis [PtCl2(PR3)(2)] gives [S2N2](2-) complexes in 32-76% yields. Similarly, SeCl4 and [S4N3]Cl in a ratio of 5:1 react cleanly with cis-[PtCl2{P(OMe)(n)-Ph3-n}] to give the desired selenosulfur dinitrido, [SeSN2](2-) complexes with no phosphorus containing starting material evident by P-31 NMR spectroscopy. The new complexes were characterised by IR, P-31 NMR, microanalysis and X-ray crystallography with nine crystal structures being reported. In P-31 nmr the (1)J PtP coupling constants are influenced by the oxygen content of their phosphorus ligands. In the mixed chalcogen complexes the Pt-N bond lengths appear to follow a simple trend as a consequence of the electronic properties of the phosphorus ligand and these trends can be interpreted empirically by examination of the LUMO but are not well supported by DFT calculations.

Original languageEnglish
Pages (from-to)3185-3194
Number of pages10
JournalEuropean Journal of Inorganic Chemistry
Volume2010
Issue number20
DOIs
Publication statusPublished - Jul 2010

Keywords

  • Sulfur
  • Selenium
  • Platinum
  • DFT calculations
  • X-RAY STRUCTURE
  • NUCLEAR MAGNETIC-RESONANCE
  • SULFUR NITROGEN COMPLEXES
  • DENSITY-FUNCTIONAL THEORY
  • ZETA VALENCE QUALITY
  • BASIS-SETS
  • CRYSTAL-STRUCTURES
  • PLATINUM(II) COMPLEXES
  • STACKING COMPOUNDS
  • TRANS-INFLUENCE

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