Difluorophosphate

Difluorophosphate
Structure of difluorophosphate ion
Ball-and-stick model of the difluorophosphate ion
Ball-and-stick model of the difluorophosphate ion
Spacefill model of difluorophosphate
Spacefill model of difluorophosphate
Names
Systematic IUPAC name
Difluorophosphate[1]
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/F2HO2P/c1-5(2,3)4/h(H,3,4)/p-1
    Key: DGTVXEHQMSJRPE-UHFFFAOYSA-M
  • InChI=1/F2HO2P/c1-5(2,3)4/h(H,3,4)/p-1
    Key: DGTVXEHQMSJRPE-REWHXWOFAH
  • [O-]P(=O)(F)F
Properties
PO2F−2
Molar mass 100.97 g mol−1
Structure
Tetracoordinated at phosphorus atom
Tetrahedral at phosphorus atom
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Difluorophosphate or difluorodioxophosphate or phosphorodifluoridate is an anion with formula PO2F−2. It has a single negative charge and resembles perchlorate (ClO−4) and monofluorosulfonate (SO3F−) in shape and compounds.[2] These ions are isoelectronic, along with tetrafluoroaluminate, phosphate, orthosilicate, and sulfate.[2][3] It forms a series of compounds. The ion is toxic to mammals as it causes blockage to iodine uptake in the thyroid. However it is degraded in the body over several hours.[2]

Compounds containing difluorophosphate may have it as a simple uninegative ion, it may function as a difluorophosphato ligand where it is covalently bound to one or two metal atoms, or go on to form a networked solid.[4] It may be covalently bound to a non metal or an organic moiety to make an ester or an amide.

  1. ^ Toy, Arthur D. F. (22 Oct 2013). The Chemistry of Phosphorus. Pergamon Texts in Inorganic Chemistry. Vol. 3. Pergamon Press. pp. 536–537. ISBN 9781483147413. Retrieved 19 June 2015.
  2. ^ a b c Cite error: The named reference an59 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Lange29 was invoked but never defined (see the help page).
  4. ^ Schulz, Christoph; Eiden, Philipp; Klose, Petra; Ermantraut, Andreas; Schmidt, Michael; Garsuch, Arnd; Krossing, Ingo (2015). "Homoleptic borates and aluminates containing the difluorophosphato ligand – [M(O2PF2)x]y− – synthesis and characterization". Dalton Trans. 44 (15): 7048–7057. doi:10.1039/c5dt00469a. PMID 25785817.