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/6-311G**

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/6-311G**
 hartrees
Energy at 0K-238.984758
Energy at 298.15K-238.987604
HF Energy-238.984758
Nuclear repulsion energy77.284331
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/6-311G**
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 3065 2932 48.76 106.37 0.10 0.18
2 A1 1538 1471 1.44 6.11 0.75 0.86
3 A1 1135 1086 115.09 3.60 0.29 0.45
4 A1 534 511 5.25 1.85 0.72 0.83
5 A2 1286 1231 0.00 10.65 0.75 0.86
6 B1 3140 3003 52.89 45.71 0.75 0.86
7 B1 1193 1141 22.88 1.80 0.75 0.86
8 B2 1488 1423 31.19 4.29 0.75 0.86
9 B2 1119 1070 248.65 2.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7248.9 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 6933.5 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/6-311G**
ABC
1.66012 0.35284 0.30887

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.500
H2 -0.912 0.000 1.102
H3 0.912 0.000 1.102
F4 0.000 1.101 -0.289
F5 0.000 -1.101 -0.289

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.09271.09271.35501.3550
H21.09271.82391.99501.9950
H31.09271.82391.99501.9950
F41.35501.99501.99502.2030
F51.35501.99501.99502.2030

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 113.152 H2 C1 F4 108.713
H2 C1 F5 108.713 H3 C1 F4 108.713
H3 C1 F5 108.713 F4 C1 F5 108.757
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.289      
2 H 0.095      
3 H 0.095      
4 F -0.240      
5 F -0.240      


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 1.958 1.958
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.993 0.000 0.000
y 0.000 -18.774 0.000
z 0.000 0.000 -14.979
Traceless
 xyz
x 1.883 0.000 0.000
y 0.000 -3.788 0.000
z 0.000 0.000 1.905
Polar
3z2-r23.810
x2-y23.781
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.848 0.000 0.000
y 0.000 2.003 0.000
z 0.000 0.000 1.911


<r2> (average value of r2) Å2
<r2> 39.085
(<r2>)1/2 6.252