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Experimental data for PF3 (Phosphorus trifluoride)

22 02 02 11 45
Other names
Phosphorous fluoride; Phosphorous-trifluoride-; Phosphorus fluoride; Phosphorus trifluoride; Phosphorus(III) fluoride; TL 75; Trifluorophosphine; Trifluorophosphane;
INChI INChIKey SMILES IUPAC name
InChI=1S/F3P/c1-4(2)3 WKFBZNUBXWCCHG-UHFFFAOYSA-N FP(F)F Trifluorophosphane
State Conformation
1A1 C3V
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 -957.30 1.26 kJ mol-1 1972Joh/Mal:879-891
Hfg(0K) enthalpy of formation   1.26 kJ mol-1 1972Joh/Mal:879-891
Entropy (298.15K) entropy 273.06 0.13 J K-1 mol-1 JANAF
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 12.94   kJ mol-1 JANAF
Heat Capacity (298.15K) heat capacity 58.68   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 892   Shim 110.3   1977Gol/Jea:901
2 A1 487   Shim 24.1   1977Gol/Jea:901
3 E 860   Shim 416.1   1977Gol/Jea:901
4 E 344   Shim 8.6   1977Gol/Jea:901

vibrational zero-point energy: 1893.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for PF3 (Phosphorus trifluoride).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
  0.26084   1966Herzberg

Calculated rotational constants for PF3 (Phosphorus trifluoride).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Phosphorus trifluoride

Point Group C3v


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 1.561   1 2 1998Kuc
aFPF 97.7 2 1 3 1998Kuc
aXPF 119.6 255 1 2 1998Kuc From symmetry. X is on symmetry axis.

Cartesians
Atom x (Å) y (Å) z (Å)
P1 0.0000 0.0000 0.4602
F2 0.0000 1.3578 -0.2557
F3 1.1759 -0.6789 -0.2557
F4 -1.1759 -0.6789 -0.2557

Atom - Atom Distances bond lengths
Distances in Å
  P1 F2 F3 F4
P1   1.53501.53501.5350
F2 1.5350   2.35182.3518
F3 1.53502.3518   2.3518
F4 1.53502.35182.3518  

Calculated geometries for PF3 (Phosphorus trifluoride).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
F2 P1 F3 100.004 F2 P1 F4 100.004
F3 P1 F4 100.004

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
F-P 3

Connectivity
Atom 1 Atom 2
P1 F2
P1 F3
P1 F4
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1
60000 1 1966Herzberg

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
11.380 0.100 12.200   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 C3v True       1.030 NSRDS-NBS10 MW C3v 1 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 PF3 (Phosphorus trifluoride).
Vibration specific dipole moments
Vibrational Quantum numbers Dip x Dip y Dip z Dip total Squib Comment
ν4=1       1.130 1974Hel/Hel(II/6) MW

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 C3v True -12.050 -12.050 24.100 1974Hel/Hel(II/6) C3v 1 1

Calculated electric quadrupole moments for PF3 (Phosphorus trifluoride).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
4.414   1997Oln/Can:59

Calculated electric dipole polarizability for PF3 (Phosphorus trifluoride).

References
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squib reference DOI
1966Herzberg Herzberg, G., Electronic spectra and electronic structure of polyatomic molecules,Van Nostrand,New York, 1966  
1972Joh/Mal:879-891 GK Johnson, JG Malm, WN Hubbard "The enthalpies of formation of XeF6(c), XeF4(c), XeF2(c), and PF3(g)" J. Chem. Thermo. 4 1976, 879-891 10.1016/0021-9614(72)90010-9
1974Hel/Hel(II/6) Hellwege, KH and AM Hellwege (eds.). Landolt-Bornstein: Group II: Volume 6 Molecular Constants from Microwave, Molecular Beam, and Electron Spin Resonance Spectroscopy Springer-Verlag. Berlin. 1974. 10.1007/b19951 
1977Gol/Jea:901 WG Golden, AC Jeannotte II, CC Blackburn, J Overend "Intensities of binary overtone and combination bands in the i.r. spectrum of NF3" Spectrochimica Acta 33A, 901, 1977 10.1016/0584-8539(77)80089-5
1997Oln/Can:59 TN Olney, NM Cann, G Cooper, CE Brion, Absolute scale determination for photoabsorption spectra and the calculation of molecular properties using dipole sum-rules, Chem. Phys. 223 (1997) 59-98 10.1016/S0301-0104(97)00145-6
1998Kuc K Kuchitsu(ed) "Structure of Free Polyatomic Molecules - Basic Data" Springer, Berlin, 1998 10.1007/978-3-642-45748-7 
JANAF Chase, M.W., Jr.; Davies, C.A.; Downey, J.R., Jr.; Frurip, D.J.; McDonald, R.A.; Syverud, A.N., JANAF Thermochemical Tables (Third Edition), J. Phys. Chem. Ref. Data,Suppl. 1, 1985, 14, 1.  
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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