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: B3LYP/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-239.019866
Energy at 298.15K-239.022673
HF Energy-239.019866
Nuclear repulsion energy76.489783
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/daug-cc-pVDZ
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 3062 3062 39.91 123.17 0.07 0.13
2 A1 1496 1496 0.08 3.31 0.73 0.84
3 A1 1090 1090 97.96 6.76 0.14 0.25
4 A1 511 511 4.52 1.23 0.61 0.76
5 A2 1248 1248 0.00 4.46 0.75 0.86
6 B1 3144 3144 27.76 44.18 0.75 0.86
7 B1 1159 1159 14.35 0.61 0.75 0.86
8 B2 1420 1420 9.00 0.80 0.75 0.86
9 B2 1053 1053 262.07 2.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7090.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7090.8 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/daug-cc-pVDZ
ABC
1.62020 0.34611 0.30270

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.510
H2 -0.921 0.000 1.107
H3 0.921 0.000 1.107
F4 0.000 1.112 -0.293
F5 0.000 -1.112 -0.293

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.09761.09761.37141.3714
H21.09761.84212.01092.0109
H31.09761.84212.01092.0109
F41.37142.01092.01092.2243
F51.37142.01092.01092.2243

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 114.101 H2 C1 F4 108.557
H2 C1 F5 108.557 H3 C1 F4 108.557
H3 C1 F5 108.557 F4 C1 F5 108.375
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.925      
2 H -0.346      
3 H -0.346      
4 F -0.616      
5 F -0.616      


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 2.007 2.007
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.446 0.000 0.000
y 0.000 -19.411 0.000
z 0.000 0.000 -15.526
Traceless
 xyz
x 2.022 0.000 0.000
y 0.000 -3.925 0.000
z 0.000 0.000 1.902
Polar
3z2-r23.805
x2-y23.965
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.567 0.000 0.000
y 0.000 2.910 0.000
z 0.000 0.000 2.714


<r2> (average value of r2) Å2
<r2> 40.001
(<r2>)1/2 6.325