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Experimental data for XeF2 (Xenon difluoride)

22 02 02 11 45
INChI INChIKey SMILES IUPAC name
InChI=1S/F2Xe/c1-3-2 F[Xe]F
State Conformation
1ΣG D*H
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 -107.03 0.88 kJ mol-1 1972Joh/Mal:879-891
Hfg(0K) enthalpy of formation   0.88 kJ mol-1 1972Joh/Mal:879-891
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 Σg 517   webbook       XeF2 s-stretch
2 Σu 560           XeF2 a-stretch
3 Πu 213           bend

vibrational zero-point energy: 751.4 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for XeF2 (Xenon difluoride).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
  0.11340   1993Bur/Ma:536-539 132Xe

Calculated rotational constants for XeF2 (Xenon difluoride).
Product of moments of inertia moments of inertia
148.659amu Å2   2.468579E-38gm cm2
Geometric Data
picture of Xenon difluoride

Point Group D∞h


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
rFXe 1.974 0.000 1 2 1993Bur/Ma:536-539 re
aFXeF 180 2 1 3 from symmetry

Cartesians
Atom x (Å) y (Å) z (Å)
Xe1 0.0000 0.0000 0.0000
F2 0.0000 0.0000 1.9744
F3 0.0000 0.0000 -1.9744

Atom - Atom Distances bond lengths
Distances in Å
  Xe1 F2 F3
Xe1   1.97441.9744
F2 1.9744   3.9487
F3 1.97443.9487  

Calculated geometries for XeF2 (Xenon difluoride).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle
F2 Xe1 F3 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-Xe 2

Connectivity
Atom 1 Atom 2
Xe1 F2
Xe1 F3
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1ΣG

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
12.330 0.030     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 1ΣG D∞h True           D∞h 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 XeF2 (Xenon difluoride).
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 1ΣG D∞h True       D∞h 0 1

Calculated electric quadrupole moments for XeF2 (Xenon difluoride).

References
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squib reference DOI
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
1993Bur/Ma:536-539 H Burger, S Ma "The Ground State and Equilibrium Structure of XeF2" J. Mol. Spec. 157, 536-539 (1993) 10.1006/jmsp.1993.1043
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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