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Experimental data for PF2+ (Phosphorus difluoride cation)

22 02 02 11 45
INChI INChIKey SMILES IUPAC name
InChI=1S/F2P/c1-3-2 MSGYRGHIEBLFLX-UHFFFAOYSA-N F[P]F
State Conformation
1A1 C2V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -488.26   kJ mol-1 webbook
Hfg(0K) enthalpy of formation     kJ mol-1 webbook
Entropy (298.15K) entropy 262.96   J K-1 mol-1 webbook
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity     kJ mol-1  
Heat Capacity (298.15K) heat capacity 44.71   J K-1 mol-1 webbook
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A1 841   webbook      
2 A1 366          
3 B2 848          

vibrational zero-point energy: 1027.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for PF2+ (Phosphorus difluoride cation).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.93259 0.31042 0.23229 1998Sai/End:1778-1784

Calculated rotational constants for PF2+ (Phosphorus difluoride cation).
Product of moments of inertia moments of inertia
71240.9amu3Å6   3.26210079200156E-115gm3 cm6
Geometric Data
picture of Phosphorus difluoride cation

Point Group C2v


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rPF 1.579   1 2 1998Sai/End:1778-1784 r0
aFPF 98.48 2 1 3 1998Sai/End:1778-1784

Cartesians
Atom x (Å) y (Å) z (Å)
P1 0.0000 0.0000 0.5624
F2 0.0000 1.1962 -0.4687
F3 0.0000 -1.1962 -0.4687

Atom - Atom Distances bond lengths
Distances in Å
  P1 F2 F3
P1   1.57921.5792
F2 1.5792   2.3923
F3 1.57922.3923  

Calculated geometries for PF2+ (Phosphorus difluoride cation).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle
F2 P1 F3 98.480

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
F-P 2

Connectivity
Atom 1 Atom 2
P1 F2
P1 F3
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 2   1A1

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
8.840 0.010 9.090 0.010 webbook

Electron Affinity (eV)
Electron Affinity unc. reference
1.600 0.500 webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A1 C2v True           C2v 1 2
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for PF2+ (Phosphorus difluoride cation).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A1 C2v True       C2v 1 2

Calculated electric quadrupole moments for PF2+ (Phosphorus difluoride cation).

References
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squib reference DOI
1998Sai/End:1778-1784 S Saito, Y Endo, and E Hirota "The microwave spectrum of the PF2 radical in the X̃ 2B1 ground vibronic state" J. Chem. Phys.85, 1778 (1986) 10.1063/1.451837 Submitted: 06 February 1986 . Accepted: 22 April 1986 . Published Online: 31
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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