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

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-237.671803
Energy at 298.15K-237.674607
HF Energy-237.671803
Nuclear repulsion energy75.363115
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 B3LYP/3-21G
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 3052 2945 48.01 95.01 0.12 0.21
2 A1 1599 1543 2.81 13.81 0.74 0.85
3 A1 1082 1044 71.48 5.10 0.21 0.35
4 A1 493 476 6.05 2.32 0.74 0.85
5 A2 1271 1226 0.00 19.11 0.75 0.86
6 B1 3099 2990 84.41 50.69 0.75 0.86
7 B1 1165 1124 15.00 3.78 0.75 0.86
8 B2 1509 1456 35.07 7.36 0.75 0.86
9 B2 1124 1085 137.46 3.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7196.8 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 6944.2 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 B3LYP/3-21G
ABC
1.61486 0.33173 0.29072

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.508
H2 -0.901 0.000 1.128
H3 0.901 0.000 1.128
F4 0.000 1.138 -0.295
F5 0.000 -1.138 -0.295

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.09371.09371.39221.3922
H21.09371.80142.03232.0323
H31.09371.80142.03232.0323
F41.39222.03232.03232.2754
F51.39222.03232.03232.2754

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 110.873 H2 C1 F4 109.085
H2 C1 F5 109.085 H3 C1 F4 109.085
H3 C1 F5 109.085 F4 C1 F5 109.613
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.218      
2 H 0.185      
3 H 0.185      
4 F -0.294      
5 F -0.294      


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 1.945 1.945
CHELPG        
AIM        
ESP 0.006 0.000 1.968 1.968


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.981 0.000 0.000
y 0.000 -18.631 0.000
z 0.000 0.000 -14.748
Traceless
 xyz
x 1.709 0.000 0.000
y 0.000 -3.767 0.000
z 0.000 0.000 2.058
Polar
3z2-r24.116
x2-y23.651
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.565 0.000 0.000
y 0.000 1.740 0.000
z 0.000 0.000 1.605


<r2> (average value of r2) Å2
<r2> 40.644
(<r2>)1/2 6.375