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

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1Ag
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-197.154476
Energy at 298.15K-197.155928
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy31.432631
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 HF/STO-3G
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 4516 3688 46.40      
2 A 4499 3673 82.03      
3 A 719 587 94.14      
4 A 581 474 106.64      
5 A 366 299 98.87      
6 A 274 224 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 5476.9 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 4471.9 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 HF/STO-3G
ABC
21.84535 0.25773 0.25472

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.401 -0.092 0.000
F2 -1.219 -0.096 0.000
H3 -1.570 0.790 0.000
F4 1.349 0.018 -0.000

Atom - Atom Distances (Å)
  H1 F2 H3 F4
H11.61982.15960.9540
F21.61980.95282.5699
H32.15960.95283.0192
F40.95402.56993.0192

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 111.520 H1 F4 H3 21.445
F2 H1 F4 173.494 F2 H3 F4 53.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.208      
2 F -0.179      
3 H 0.228      
4 F -0.257      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.392 1.134 0.000 2.647
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.046 -2.122 0.000
y -2.122 -8.151 0.000
z 0.000 0.000 -9.249
Traceless
 xyz
x -1.346 -2.122 0.000
y -2.122 1.496 0.000
z 0.000 0.000 -0.150
Polar
3z2-r2-0.300
x2-y2-1.895
xy-2.122
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.733 -0.175 0.000
y -0.175 0.436 0.000
z 0.000 0.000 0.001


<r2> (average value of r2) Å2
<r2> 38.795
(<r2>)1/2 6.229