National Institute of Standards and Technology
Computational Chemistry Comparison and Benchmark DataBase
Release 19April 2018
NIST Standard Reference Database 101
IIExperimental data
IIICalculated data
IVData comparisons
VCost comparisons
VIInput and output files
VIITutorials and Units
VIIILinks to other sites
XOlder CCCBDB versions
XIII Vibrations
XIVReaction data
XVEntropy data
XVIBibliographic data
XVIIIon data
XVIIIBad calculations
XIXIndex of properties
XXH-bond dimers

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All results from a given calculation for HF (Hydrogen fluoride)

using model chemistry: B3LYP/STO-3G

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at B3LYP/STO-3G
Energy at 0K-98.926243
Energy at 298.15K 
HF Energy-98.926243
Nuclear repulsion energy4.785057
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3LYP/STO-3G
Mode Number Symmetry Frequency (cm-1) Scaled Frequency (cm-1) IR Intensities (km mol-1)
1 Σ 3880 3463 50.85

Unscaled Zero Point Vibrational Energy (zpe) 1940.1 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 1731.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3LYP/STO-3G

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
F1 0.000 0.000 0.100
H2 0.000 0.000 -0.896

Atom - Atom Distances (Å)

  F1 H2

picture of Hydrogen fluoride
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Charges from optimized geometry at B3LYP/STO-3G Charges (e)

Number Element Mulliken CHELPG AIM ESP
1 F -0.164      
2 H 0.164      

Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)

  x y z Total
  0.000 0.000 -1.118 1.118

Electric Quadrupole moment
Quadrupole components in D Å

x -4.664 0.000 0.000
y 0.000 -4.664 0.000
z 0.000 0.000 -3.499
x -0.582 0.000 0.000
y 0.000 -0.582 0.000
z 0.000 0.000 1.164

Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.

  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000

<r2> (averge value of r2) Å2

<r2> 3.562
(<r2>)1/2 1.887