Molbank (Jul 2023)

Potassium Trifluorotris(pentafluoroethyl)phosphate

  • Ivan G. Mokrushin,
  • Pavel A. Permyakov,
  • Olga A. Pinegina,
  • Petr S. Poturaev,
  • Maksim V. Dmitriev,
  • Igor V. Markin

DOI
https://doi.org/10.3390/M1687
Journal volume & issue
Vol. 2023, no. 3
p. M1687

Abstract

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A transparent white crystalline product, K[(C2F5)3PF3] (KFAP), has been synthesized via a one-pot route. Difluorotris(pentafluoroethyl)phosphorane was reacted first with aqueous HF then with K2CO3 or KHCO3 in a solution. Isolation of the intermediate, tris(pentafluoroethyl)trifluorophosphoric acid H[(C2F5)3PF3] (HFAP), was not carried out. The salt has been characterised by powder and single crystal X-ray diffraction. The single-crystal structure shows a monoperiodic coordination polymer involving K∙∙∙F bridging interactions to be present. The thermal characteristics and behaviour of KFAP have been established by simultaneous TGA-DSC measurements.

Keywords