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

using model chemistry: PBE1PBE/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 PBE1PBE/3-21G*
 hartrees
Energy at 0K-237.438488
Energy at 298.15K-237.441302
HF Energy-237.438488
Nuclear repulsion energy75.699118
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 PBE1PBE/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 3075 2952 44.93 95.06 0.12 0.21
2 A1 1603 1538 2.19 13.41 0.74 0.85
3 A1 1108 1063 74.16 5.04 0.21 0.35
4 A1 499 479 6.72 2.22 0.74 0.85
5 A2 1281 1230 0.00 18.66 0.75 0.86
6 B1 3129 3003 77.70 49.60 0.75 0.86
7 B1 1172 1125 15.01 3.52 0.75 0.86
8 B2 1513 1452 34.03 6.96 0.75 0.86
9 B2 1159 1112 138.26 3.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7269.0 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 6976.8 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 PBE1PBE/3-21G*
ABC
1.62507 0.33517 0.29369

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.505
H2 -0.901 0.000 1.125
H3 0.901 0.000 1.125
F4 0.000 1.132 -0.294
F5 0.000 -1.132 -0.294

Atom - Atom Distances (Å)
  C1 H2 H3 F4 F5
C11.09341.09341.38521.3852
H21.09341.80122.02622.0262
H31.09341.80122.02622.0262
F41.38522.02622.02622.2633
F51.38522.02622.02622.2633

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 110.900 H2 C1 F4 109.091
H2 C1 F5 109.091 H3 C1 F4 109.091
H3 C1 F5 109.091 F4 C1 F5 109.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.194      
2 H 0.207      
3 H 0.207      
4 F -0.304      
5 F -0.304      


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 2.003 2.003
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.952 0.000 0.000
y 0.000 -18.718 0.000
z 0.000 0.000 -14.726
Traceless
 xyz
x 1.770 0.000 0.000
y 0.000 -3.879 0.000
z 0.000 0.000 2.109
Polar
3z2-r24.218
x2-y23.766
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.561 0.000 0.000
y 0.000 1.710 0.000
z 0.000 0.000 1.587


<r2> (average value of r2) Å2
<r2> 40.366
(<r2>)1/2 6.353