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

using model chemistry: PBEPBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1Ag
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-200.657791
Energy at 298.15K-200.659289
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy32.735459
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 PBEPBE/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3731 3678 289.88      
2 A' 3664 3612 0.04      
3 A' 923 909 0.00      
4 A' 267 263 1.88      
5 A' 255 251 608.96      
6 A" 559 551 291.31      

Unscaled Zero Point Vibrational Energy (zpe) 4698.8 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 4631.6 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 PBEPBE/6-31G*
ABC
18.84213 0.29022 0.28581

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.671 -0.553 0.000
F2 0.000 1.230 0.000
H3 0.669 0.552 0.000
F4 0.000 -1.230 0.000

Atom - Atom Distances (Å)
  H1 F2 H3 F4
H11.90521.73670.9526
F21.90520.95242.4595
H31.73670.95241.9029
F40.95262.45951.9029

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 65.229 H1 F4 H3 65.345
F2 H1 F4 114.618 F2 H3 F4 114.807
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.452      
2 F -0.452      
3 H 0.452      
4 F -0.452      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.004 -0.005 0.000 0.007
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -8.636 1.025 0.000
y 1.025 -14.682 0.000
z 0.000 0.000 -10.894
Traceless
 xyz
x 4.152 1.025 0.000
y 1.025 -4.918 0.000
z 0.000 0.000 0.766
Polar
3z2-r21.532
x2-y26.046
xy1.025
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.098 -0.073 0.000
y -0.073 1.462 0.000
z 0.000 0.000 0.575


<r2> (average value of r2) Å2
<r2> 35.852
(<r2>)1/2 5.988