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

using model chemistry: PBEPBEultrafine/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-238.844428
Energy at 298.15K-238.847214
HF Energy-238.844428
Nuclear repulsion energy76.377942
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/aug-cc-pVTZ
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 2966 2933 42.79 132.20 0.06 0.12
2 A1 1467 1451 0.05 3.55 0.70 0.82
3 A1 1070 1058 90.11 6.43 0.16 0.28
4 A1 505 499 3.73 1.30 0.63 0.77
5 A2 1215 1202 0.00 4.56 0.75 0.86
6 B1 3035 3001 32.79 49.26 0.75 0.86
7 B1 1135 1122 12.79 0.62 0.75 0.86
8 B2 1389 1373 8.12 0.73 0.75 0.86
9 B2 1025 1013 257.42 2.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6903.7 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 6826.4 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/aug-cc-pVTZ
ABC
1.62166 0.34450 0.30154

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.508
H2 -0.921 0.000 1.109
H3 0.921 0.000 1.109
F4 0.000 1.115 -0.293
F5 0.000 -1.115 -0.293

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.10031.10031.37261.3726
H21.10031.84292.01432.0143
H31.10031.84292.01432.0143
F41.37262.01432.01432.2296
F51.37262.01432.01432.2296

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 113.747 H2 C1 F4 108.592
H2 C1 F5 108.592 H3 C1 F4 108.592
H3 C1 F5 108.592 F4 C1 F5 108.620
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.152      
2 H 0.229      
3 H 0.229      
4 F -0.305      
5 F -0.305      


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 1.856 1.856
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.555 0.000 0.000
y 0.000 -19.260 0.000
z 0.000 0.000 -15.638
Traceless
 xyz
x 1.895 0.000 0.000
y 0.000 -3.664 0.000
z 0.000 0.000 1.769
Polar
3z2-r23.538
x2-y23.705
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.661 0.000 0.000
y 0.000 3.038 0.000
z 0.000 0.000 2.825


<r2> (average value of r2) Å2
<r2> 40.125
(<r2>)1/2 6.334