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Experimental data for LiF- (lithium fluoride anion)

22 02 02 11 45
Other names
Fluorolithium; Lithium fluoride; Lithium fluoride (Li3F3); Lithium fluoride (LiF); Lithium fluorure; Lithium monofluoride; NTL 50; TLD 100; TLD 700; Trilithium trifluoride;
INChI INChIKey SMILES IUPAC name
InChI=1S/FH.Li/h1H;/q;+1/p-1 PQXKHYXIUOZZFA-UHFFFAOYSA-M [Li]F Lithium fluoride
State Conformation
1Σ C*V
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 -340.79 8.40 kJ mol-1 JANAF
Hfg(0K) enthalpy of formation -340.57 8.40 kJ mol-1 JANAF
Entropy (298.15K) entropy 200.28 0.01 J K-1 mol-1 JANAF
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 8.82   kJ mol-1 JANAF
Heat Capacity (298.15K) heat capacity 31.29   J K-1 mol-1 JANAF
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 Σ 896 911 2007Iri:389      

Detailed diatomic data
ωe ωexe ωeye Be αe ZPE reference
910.5727 8.207956 0.569166 1.345257 2.028749E-02 453.7076 2007Iri:389

vibrational zero-point energy: 448.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for LiF- (lithium fluoride anion).
More spectroscopic constants are available at the NIST Physics Laboratory website:
http://physics.nist.gov/PhysRefData/MolSpec/Diatomic/Html/Tables/LiF.html
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
  1.34526 1.34526 NISTdiatomic 7Li

Calculated rotational constants for LiF- (lithium fluoride anion).
Product of moments of inertia moments of inertia
12.53115amu Å2   2.080879E-39gm cm2
Geometric Data
picture of lithium fluoride anion

Point Group C∞v


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
rLiF 1.564 0.000 1 2 NISTdiatomic re 7Li 19F

Cartesians
Atom x (Å) y (Å) z (Å)
F1 0.0000 0.0000 0.0000
Li2 0.0000 0.0000 1.5639

Atom - Atom Distances bond lengths
Distances in Å
  F1 Li2
F1   1.5639
Li2 1.5639  

Calculated geometries for LiF- (lithium fluoride anion).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
Li-F 1

Connectivity
Atom 1 Atom 2
F1 Li2
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1 1979HUB/HER 1Σ

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference Comment
11.300       webbook questionable lower limit for EA of 1.35 eV
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 1Σ C∞v True       6.284 NISTdiatomic μe C∞v 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 LiF- (lithium fluoride anion).
Vibration specific dipole moments
Vibrational Quantum numbers Dip x Dip y Dip z Dip total Squib Comment
equil       6.284 NISTdiatomic  
0       6.327 NISTdiatomic  
1       6.415 NISTdiatomic  
2       6.503 NISTdiatomic  
3       6.533 NISTdiatomic  

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 1Σ C∞v True       C∞v 1 1

Calculated electric quadrupole moments for LiF- (lithium fluoride anion).

References
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squib reference DOI
1979HUB/HER Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules, Van Nostrand Reinhold Co., 1979 10.1007/978-1-4757-0961-2
2007Iri:389 KK Irikura "Experimental Vibrational Zero-Point Energies: Diatomic Molecules" J. Phys. Chem. Ref. Data 36(2), 389, 2007 10.1063/1.2436891
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.  
NISTdiatomic NIST Diatomic Spectral Database (www.physics.nist.gov/PhysRefData/MolSpec/Diatomic/index.html) 10.18434/T4T59X
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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