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Dianionic platinadiphospholene complexes.

Cornelia Tirla1, Nicolas Mézailles, Louis Ricard

  • 1Laboratoire Héteroéléments et Coordination, UMR CNRS 7653, Ecole Polytechnique, 91128 Palaiseau Cedex, France.

Inorganic Chemistry
|November 12, 2002
PubMed
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1,2,3,4-tetraphenyl-1,2-dihydrodiphosphetene reacts with alkali metals to form dianionic salts. These salts coordinate with platinum(II) to form novel complexes with distorted square planar and pseudotetrahedral geometries.

Area of Science:

  • Organometallic Chemistry
  • Coordination Chemistry
  • Materials Science

Background:

  • Diphosphetenes are a class of organophosphorus compounds with unique electronic properties.
  • The synthesis and characterization of metal complexes with diphosphetene ligands are of interest for developing new materials.

Purpose of the Study:

  • To synthesize and characterize novel dianionic salts of 1,2,3,4-tetraphenyl-1,2-dihydrodiphosphetene.
  • To investigate the coordination chemistry of these dianionic salts with platinum(II).

Main Methods:

  • Reaction of 1,2,3,4-tetraphenyl-1,2-dihydrodiphosphetene with lithium or sodium naphthalenide.
  • X-ray crystal structure analysis of the resulting dianionic salts and platinum complexes.
  • Spectroscopic characterization of the synthesized compounds.

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Main Results:

  • Dianionic lithium and sodium salts of 1,2,3,4-tetraphenyl-1,2-dihydrodiphosphetene were successfully synthesized.
  • X-ray crystallography revealed a polymeric structure for the sodium dianion and coordination of the dianions to platinum(II) centers.
  • Platinum complexes exhibited distorted square planar and pseudotetrahedral geometries, with specific diastereomers formed.

Conclusions:

  • The study demonstrates the formation of novel dianionic diphosphetene salts and their coordination complexes with platinum(II).
  • The structural and stereochemical outcomes provide insights into the coordination behavior of these unique ligands.