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Experimental data for GeF4 (Germanium tetrafluoride)

22 02 02 11 45
Other names
tetrafluorogermane; perfluorogermane;
INChI INChIKey SMILES IUPAC name
InChI=1S/F4Ge/c1-5(2,3)4 PPMWWXLUCOODDK-UHFFFAOYSA-N F[Ge](F)(F)F perfluorogermane
State Conformation
1A1 Td
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 -1190.20 0.50 kJ mol-1 CODATA
Hfg(0K) enthalpy of formation   0.50 kJ mol-1 CODATA
Entropy (298.15K) entropy 301.90 1.00 J K-1 mol-1 CODATA
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 17.29 0.10 kJ mol-1 CODATA
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 735   2001Bou/Bur:172       sym stretch
2 E 203           deg. deform
3 T2 807           deg. stretch
4 T2 274           deg. deform

vibrational zero-point energy: 2191.3 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for GeF4 (Germanium tetrafluoride).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
  0.11930   2001Bou/Bur:172

Calculated rotational constants for GeF4 (Germanium tetrafluoride).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Germanium tetrafluoride

Point Group Td


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
rFGe 1.670 0.030 1 2 1951Cau/Mac:943

Cartesians
Atom x (Å) y (Å) z (Å)
Ge1 0.0000 0.0000 0.0000
F2 0.9642 0.9642 0.9642
F3 -0.9642 -0.9642 0.9642
F4 -0.9642 0.9642 -0.9642
F5 0.9642 -0.9642 -0.9642

Atom - Atom Distances bond lengths
Distances in Å
  Ge1 F2 F3 F4 F5
Ge1   1.67001.67001.67001.6700
F2 1.6700   2.72712.72712.7271
F3 1.67002.7271   2.72712.7271
F4 1.67002.72712.7271   2.7271
F5 1.67002.72712.72712.7271  

Calculated geometries for GeF4 (Germanium tetrafluoride).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
F2 Ge1 F3 109.471 F2 Ge1 F4 109.471
F2 Ge1 F5 109.471 F3 Ge1 F4 109.471
F3 Ge1 F5 109.471 F4 Ge1 F5 109.471

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
F-Ge 4

Connectivity
Atom 1 Atom 2
Ge1 F2
Ge1 F3
Ge1 F4
Ge1 F5
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
15.500       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 Td True           Td 0 0
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 GeF4 (Germanium tetrafluoride).
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 Td True       Td 0 0

Calculated electric quadrupole moments for GeF4 (Germanium tetrafluoride).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
4.050   1998Gus/Rui:163

Calculated electric dipole polarizability for GeF4 (Germanium tetrafluoride).

References
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squib reference DOI
1951Cau/Mac:943 AD Caunt, H Mackle, LE Sutton "The Germanium-Fluorine Bond Length in Germanium Tetrafluoride" Trans. Faraday Soc., 1951,47, 943-945 10.1039/TF9514700943
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
2001Bou/Bur:172 V Boudon, H Burger, EB Mkadmi "High-Resolution Spectroscopy and Analysis of the nu3 and nu4 Fundamentals of Monoisotopic 70GeF4" J. Mol. Spect. 206, 172-180 (2001) 10.1006/jmsp.2001.8304
CODATA Cox, J.D.; Wagman, D.D.; Medvedev, V.A.CODATA Key Values for Thermodynamics. Hemisphere, New York, 1989 10.1002/bbpc.19900940121
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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