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All results from a given calculation for CH3CHF2 (Ethane, 1,1-difluoro-)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-278.253963
Energy at 298.15K 
HF Energy-278.253963
Nuclear repulsion energy132.979548
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 mPW1PW91/6-31G(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 A' 3179 3035 11.52 43.02 0.73 0.85
2 A' 3083 2943 2.41 109.25 0.01 0.02
3 A' 3064 2925 54.56 82.32 0.31 0.48
4 A' 1487 1420 6.29 12.64 0.75 0.86
5 A' 1442 1377 73.94 2.08 0.67 0.80
6 A' 1391 1328 0.36 0.79 0.74 0.85
7 A' 1188 1134 85.70 2.80 0.40 0.57
8 A' 1155 1103 36.48 3.05 0.49 0.66
9 A' 885 845 4.08 6.11 0.21 0.35
10 A' 576 550 4.09 0.70 0.47 0.64
11 A' 469 448 10.89 0.79 0.60 0.75
12 A" 3178 3034 9.06 50.70 0.75 0.86
13 A" 1491 1423 0.04 7.65 0.75 0.86
14 A" 1415 1351 27.81 8.59 0.75 0.86
15 A" 1188 1134 146.24 1.86 0.75 0.86
16 A" 973 929 33.19 3.57 0.75 0.86
17 A" 377 360 0.15 0.23 0.75 0.86
18 A" 235 224 0.06 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13388.0 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 12781.6 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 mPW1PW91/6-31G(2df,p)
ABC
0.32012 0.30152 0.17419

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.156 0.000
C2 -0.901 1.032 0.000
H3 1.261 0.725 0.000
F4 0.323 -0.644 1.090
F5 0.323 -0.644 -1.090
H6 -1.793 0.403 0.000
H7 -0.908 1.665 0.889
H8 -0.908 1.665 -0.889

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50451.09721.35241.35242.13042.13972.1397
C21.50452.18362.34362.34361.09141.09101.0910
H31.09722.18361.98561.98563.07132.52502.5250
F41.35242.34361.98562.18072.60052.62343.2799
F51.35242.34361.98562.18072.60053.27992.6234
H62.13041.09143.07132.60052.60051.77901.7790
H72.13971.09102.52502.62343.27991.77901.7771
H82.13971.09102.52503.27992.62341.77901.7771

picture of Ethane, 1,1-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.274 C1 C2 H7 110.035
C1 C2 H8 110.035 C2 C1 H3 113.208
C2 C1 F4 110.129 C2 C1 F5 110.129
H3 C1 F4 107.854 H3 C1 F5 107.854
F4 C1 F5 107.466 H6 C2 H7 109.204
H6 C2 H8 109.204 H7 C2 H8 109.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.187      
2 C -0.510      
3 H 0.104      
4 F -0.138      
5 F -0.138      
6 H 0.171      
7 H 0.162      
8 H 0.162      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.315 1.862 0.000 1.888
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.135 0.486 0.000
y 0.486 -22.213 0.000
z 0.000 0.000 -24.315
Traceless
 xyz
x 2.129 0.486 0.000
y 0.486 0.513 0.000
z 0.000 0.000 -2.642
Polar
3z2-r2-5.283
x2-y21.078
xy0.486
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.749 -0.117 0.000
y -0.117 3.693 0.000
z 0.000 0.000 3.664


<r2> (average value of r2) Å2
<r2> 71.108
(<r2>)1/2 8.433