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All results from a given calculation for CH2F2 (Methane, difluoro-)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-238.889863
Energy at 298.15K 
HF Energy-238.889863
Nuclear repulsion energy77.118564
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 B3PW91/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3051 2924 52.41      
2 A1 1551 1487 3.11      
3 A1 1145 1098 99.68      
4 A1 523 502 4.32      
5 A2 1275 1222 0.00      
6 B1 3117 2988 69.57      
7 B1 1193 1143 18.93      
8 B2 1490 1428 40.58      
9 B2 1148 1100 209.45      

Unscaled Zero Point Vibrational Energy (zpe) 7246.4 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 6944.9 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 B3PW91/6-31G**
ABC
1.66209 0.35049 0.30702

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.497
H2 -0.909 0.000 1.110
H3 0.909 0.000 1.110
F4 0.000 1.105 -0.289
F5 0.000 -1.105 -0.289

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.09641.09641.35651.3565
H21.09641.81852.00142.0014
H31.09641.81852.00142.0014
F41.35652.00142.00142.2109
F51.35652.00142.00142.2109

picture of Methane, difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 112.058 H2 C1 F4 108.898
H2 C1 F5 108.898 H3 C1 F4 108.898
H3 C1 F5 108.898 F4 C1 F5 109.152
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.358      
2 H 0.110      
3 H 0.110      
4 F -0.288      
5 F -0.288      


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 1.720 1.720
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.001 0.000 0.000
y 0.000 -18.158 0.000
z 0.000 0.000 -14.833
Traceless
 xyz
x 1.494 0.000 0.000
y 0.000 -3.241 0.000
z 0.000 0.000 1.747
Polar
3z2-r23.494
x2-y23.157
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.974 0.000 0.000
y 0.000 1.989 0.000
z 0.000 0.000 1.958


<r2> (average value of r2) Å2
<r2> 39.092
(<r2>)1/2 6.252