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All results from a given calculation for H2F2 (Hydrogen fluoride dimer)

using model chemistry: B3LYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1Ag
Energy calculated at B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-200.880930
Energy at 298.15K-200.882181
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy32.383500
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/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3982 3843 0.00      
2 Ag 790 763 0.00      
3 Ag 250 241 0.00      
4 Au 494 476 270.80      
5 Bu 4021 3881 247.36      
6 Bu 152 147 551.91      

Unscaled Zero Point Vibrational Energy (zpe) 4844.5 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 4674.9 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/6-31G(2df,p)
ABC
18.55832 0.27699 0.27291

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.676 0.624 0.000
F2 0.000 1.257 0.000
H3 0.676 -0.624 0.000
F4 0.000 -1.257 0.000

Atom - Atom Distances (Å)
  H1 F2 H3 F4
H10.92621.83951.9989
F20.92621.99892.5146
H31.83951.99890.9262
F41.99892.51460.9262

picture of Hydrogen fluoride dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 F2 H3 66.613 H1 F4 H3 66.613
F2 H1 F4 113.387 F2 H3 F4 113.387
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.328      
2 F -0.328      
3 H 0.328      
4 F -0.328      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -8.456 -1.195 0.000
y -1.195 -14.508 0.000
z 0.000 0.000 -10.766
Traceless
 xyz
x 4.181 -1.195 0.000
y -1.195 -4.897 0.000
z 0.000 0.000 0.716
Polar
3z2-r21.433
x2-y26.052
xy-1.195
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.280 0.092 0.000
y 0.092 1.529 0.000
z 0.000 0.000 0.892


<r2> (average value of r2) Å2
<r2> 37.168
(<r2>)1/2 6.097