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

using model chemistry: mPW1PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-278.280883
Energy at 298.15K 
HF Energy-278.280883
Nuclear repulsion energy131.961944
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/aug-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 A' 3182 3050 12.02 35.27 0.71 0.83
2 A' 3112 2982 32.03 113.92 0.22 0.36
3 A' 3081 2952 2.56 150.52 0.00 0.01
4 A' 1461 1400 8.15 4.33 0.75 0.85
5 A' 1426 1366 70.10 0.72 0.35 0.52
6 A' 1366 1309 0.68 0.64 0.46 0.63
7 A' 1155 1107 86.39 3.15 0.71 0.83
8 A' 1151 1103 42.04 2.81 0.08 0.14
9 A' 875 839 8.96 6.28 0.12 0.22
10 A' 561 538 5.24 0.81 0.31 0.47
11 A' 460 441 12.68 0.84 0.63 0.77
12 A" 3177 3045 8.09 48.19 0.75 0.86
13 A" 1460 1400 0.64 3.03 0.75 0.86
14 A" 1365 1308 15.67 3.94 0.75 0.86
15 A" 1137 1090 160.92 2.12 0.75 0.86
16 A" 941 902 67.58 2.43 0.75 0.86
17 A" 379 363 0.30 0.40 0.75 0.86
18 A" 227 217 0.05 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13257.3 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 12704.5 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/aug-cc-pVDZ
ABC
0.31455 0.29806 0.17170

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.321 0.167 0.000
C2 -0.897 1.042 0.000
H3 1.274 0.712 0.000
F4 0.321 -0.652 1.100
F5 0.321 -0.652 -1.100
H6 -1.798 0.418 0.000
H7 -0.894 1.677 0.892
H8 -0.894 1.677 -0.892

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.49951.09841.37191.37192.13302.13362.1336
C21.49952.19632.35882.35881.09541.09541.0954
H31.09842.19631.99541.99543.08582.53552.5355
F41.37192.35881.99542.20062.61592.63553.2974
F51.37192.35881.99542.20062.61593.29742.6355
H62.13301.09543.08582.61592.61591.78841.7884
H72.13361.09542.53552.63553.29741.78841.7846
H82.13361.09542.53553.29742.63551.78841.7846

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 109.590 C1 C2 H7 109.637
C1 C2 H8 109.637 C2 C1 H3 114.552
C2 C1 F4 110.394 C2 C1 F5 110.394
H3 C1 F4 107.241 H3 C1 F5 107.241
F4 C1 F5 106.654 H6 C2 H7 109.437
H6 C2 H8 109.437 H7 C2 H8 109.088
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.185      
2 C 0.205      
3 H -0.298      
4 F -0.460      
5 F -0.460      
6 H -0.064      
7 H -0.054      
8 H -0.054      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.374 2.305 0.000 2.335
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.517 0.504 0.000
y 0.504 -22.968 0.000
z 0.000 0.000 -25.523
Traceless
 xyz
x 2.729 0.504 0.000
y 0.504 0.552 0.000
z 0.000 0.000 -3.281
Polar
3z2-r2-6.561
x2-y21.451
xy0.504
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.321 -0.201 0.000
y -0.201 4.380 0.000
z 0.000 0.000 4.357


<r2> (average value of r2) Å2
<r2> 72.358
(<r2>)1/2 8.506