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

using model chemistry: PBEPBEultrafine/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-238.745346
Energy at 298.15K-238.748156
HF Energy-238.745346
Nuclear repulsion energy76.874532
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 PBEPBEultrafine/6-31G(2df,p)
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 2929 2898 53.00 101.09 0.11 0.19
2 A1 1485 1470 1.35 7.81 0.73 0.85
3 A1 1105 1094 81.70 4.47 0.20 0.33
4 A1 516 511 3.04 1.56 0.70 0.82
5 A2 1226 1214 0.00 11.75 0.75 0.86
6 B1 2986 2955 69.21 50.16 0.75 0.86
7 B1 1156 1144 15.95 2.21 0.75 0.86
8 B2 1435 1420 27.91 4.32 0.75 0.86
9 B2 1095 1084 193.00 2.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6966.4 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 6894.6 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 PBEPBEultrafine/6-31G(2df,p)
ABC
1.64599 0.34891 0.30559

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.498
H2 -0.917 0.000 1.119
H3 0.917 0.000 1.119
F4 0.000 1.108 -0.290
F5 0.000 -1.108 -0.290

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.10801.10801.35931.3593
H21.10801.83452.01362.0136
H31.10801.83452.01362.0136
F41.35932.01362.01362.2153
F51.35932.01362.01362.2153

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 111.756 H2 C1 F4 108.974
H2 C1 F5 108.974 H3 C1 F4 108.974
H3 C1 F5 108.974 F4 C1 F5 109.154
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.047      
2 H 0.109      
3 H 0.109      
4 F -0.085      
5 F -0.085      


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 1.482 1.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.120 0.000 0.000
y 0.000 -18.043 0.000
z 0.000 0.000 -15.071
Traceless
 xyz
x 1.436 0.000 0.000
y 0.000 -2.947 0.000
z 0.000 0.000 1.511
Polar
3z2-r23.021
x2-y22.922
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.256 0.000 0.000
y 0.000 2.319 0.000
z 0.000 0.000 2.266


<r2> (average value of r2) Å2
<r2> 39.316
(<r2>)1/2 6.270