return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: wB97X-D/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/6-311+G(3df,2p)
 hartrees
Energy at 0K-239.008782
Energy at 298.15K-239.011626
HF Energy-239.008782
Nuclear repulsion energy77.505504
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 wB97X-D/6-311+G(3df,2p)
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 3059 3059 42.37 110.27 0.07 0.13
2 A1 1540 1540 0.12 3.51 0.74 0.85
3 A1 1137 1137 104.01 5.77 0.16 0.27
4 A1 535 535 4.92 1.18 0.62 0.76
5 A2 1285 1285 0.00 4.56 0.75 0.86
6 B1 3132 3132 31.67 41.38 0.75 0.86
7 B1 1194 1194 15.99 0.74 0.75 0.86
8 B2 1465 1465 11.92 0.77 0.75 0.86
9 B2 1107 1107 262.66 2.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7227.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7227.0 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 wB97X-D/6-311+G(3df,2p)
ABC
1.66145 0.35569 0.31105

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.500
H2 -0.911 0.000 1.101
H3 0.911 0.000 1.101
F4 0.000 1.097 -0.289
F5 0.000 -1.097 -0.289

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.09111.09111.35141.3514
H21.09111.82171.99121.9912
H31.09111.82171.99121.9912
F41.35141.99121.99122.1939
F51.35141.99121.99122.1939

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 113.188 H2 C1 F4 108.757
H2 C1 F5 108.757 H3 C1 F4 108.757
H3 C1 F5 108.757 F4 C1 F5 108.528
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.482      
2 H 0.123      
3 H 0.123      
4 F -0.364      
5 F -0.364      


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 1.965 1.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.215 0.000 0.000
y 0.000 -19.088 0.000
z 0.000 0.000 -15.308
Traceless
 xyz
x 1.982 0.000 0.000
y 0.000 -3.826 0.000
z 0.000 0.000 1.844
Polar
3z2-r23.687
x2-y23.872
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.373 0.000 0.000
y 0.000 2.690 0.000
z 0.000 0.000 2.496


<r2> (average value of r2) Å2
<r2> 39.077
(<r2>)1/2 6.251