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Experimental data for PF5 (Phosphorus pentafluoride)

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Other names
Phosphorane, pentafluoro-; Phosphorus fluoride; Phosphorus pentafluoride; Phosphorus(V) fluoride; pentafluorophosphorane; pentafluoro-λ5-phosphane;
INChI INChIKey SMILES IUPAC name
InChI=1S/F5P/c1-6(2,3,4)5 OBCUTHMOOONNBS-UHFFFAOYSA-N FP(F)(F)(F)F pentafluoro-λ5-phosphane
State Conformation
1A1' D3H
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 -1593.30 1.30 kJ mol-1 Gurvich
Hfg(0K) enthalpy of formation -1582.42 1.30 kJ mol-1 Gurvich
Entropy (298.15K) entropy 301.02   J K-1 mol-1 Gurvich
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 16.54   kJ mol-1 Gurvich
Heat Capacity (298.15K) heat capacity 84.70   J K-1 mol-1 Gurvich
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' 816   Shim      
2 A1' 648   Shim      
3 A2" 947   Shim      
4 A2" 575   Shim      
5 E' 1024   Shim      
6 E' 533   Shim      
7 E' 174   Shim      
8 E" 520   Shim      

vibrational zero-point energy: 3744.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for PF5 (Phosphorus pentafluoride).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.12564 0.10452 0.10452 1991Sty/Bau:479 1989Pri/Kre:204

Calculated rotational constants for PF5 (Phosphorus pentafluoride).
Product of moments of inertia moments of inertia
3490248amu3Å6   1.5981747865056E-113gm3 cm6
Geometric Data
picture of Phosphorus pentafluoride

Point Group D3h


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
rFP 1.577   1 5 Gurvich axial
rPF 1.534   1 2 Gurvich equatorial

Cartesians
Atom x (Å) y (Å) z (Å)
P1 0.0000 0.0000 0.0000
F2 0.0000 1.5340 0.0000
F3 1.3285 -0.7670 0.0000
F4 -1.3285 -0.7670 0.0000
F5 0.0000 0.0000 1.5770
F6 0.0000 0.0000 -1.5770

Atom - Atom Distances bond lengths
Distances in Å
  P1 F2 F3 F4 F5 F6
P1   1.53401.53401.53401.57701.5770
F2 1.5340   2.65702.65702.20002.2000
F3 1.53402.6570   2.65702.20002.2000
F4 1.53402.65702.6570   2.20002.2000
F5 1.57702.20002.20002.2000   3.1540
F6 1.57702.20002.20002.20003.1540  

Calculated geometries for PF5 (Phosphorus pentafluoride).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
F2 P1 F3 120.000 F2 P1 F4 120.000
F2 P1 F5 90.000 F2 P1 F6 90.000
F3 P1 F4 120.000 F3 P1 F5 90.000
F3 P1 F6 90.000 F4 P1 F5 90.000
F4 P1 F6 90.000 F5 P1 F6 180.000

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
F-P 5

Connectivity
Atom 1 Atom 2
P1 F2
P1 F3
P1 F4
P1 F5
P1 F6
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1'

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
    15.540   webbook

Electron Affinity (eV)
Electron Affinity unc. reference
0.750 0.150 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' D3h True       0.000 NSRDS-NBS10   D3h 0 1
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 PF5 (Phosphorus pentafluoride).
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' D3h True       D3h 0 1

Calculated electric quadrupole moments for PF5 (Phosphorus pentafluoride).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
3.650   1998Gus/Rui:163

Calculated electric dipole polarizability for PF5 (Phosphorus pentafluoride).

References
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squib reference DOI
1991Sty/Bau:479 Styger, C.; Bauder, A. "Pure Rotational Spectrum of Phosphorus Pentafluoride Observed by Microwave Fourier Transform Spectroscopy." Journal of Molecular Spectroscopy. 148, 479-493 (1991) 10.1016/0022-2852(91)90403-W
1998Gus/Rui:163 M Gussoni, R Rui, G Zerbi "Electronic and relaxation contribution to linear molecular polarizability. An analysis of the experimental values" J. Mol. Struct. 447 (1998) 163-215 10.1016/S0022-2860(97)00292-5
Gurvich Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989  
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 10.6028/NBS.NSRDS.10
Shim Shimanouchi, T. , Tables of Molecular Vibrational Frequencies, Consolidated Volu 10.6028/NBS.NSRDS.39
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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