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

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-278.141437
Energy at 298.15K 
HF Energy-278.141437
Nuclear repulsion energy129.857799
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 B3PW91/6-31G
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' 3189 3054 16.29      
2 A' 3141 3008 36.70      
3 A' 3087 2957 2.36      
4 A' 1527 1463 7.11      
5 A' 1474 1412 43.95      
6 A' 1414 1354 27.62      
7 A' 1192 1141 33.56      
8 A' 1135 1087 85.49      
9 A' 882 845 11.94      
10 A' 542 519 9.64      
11 A' 436 418 16.01      
12 A" 3182 3047 8.83      
13 A" 1530 1465 4.34      
14 A" 1401 1342 30.60      
15 A" 1174 1124 96.75      
16 A" 957 916 66.55      
17 A" 371 355 0.07      
18 A" 253 243 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 13442.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 12874.0 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 B3PW91/6-31G
ABC
0.29686 0.29574 0.16602

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.183 0.000
C2 -0.906 1.036 0.000
H3 1.271 0.729 0.000
F4 0.325 -0.655 1.136
F5 0.325 -0.655 -1.136
H6 -1.792 0.397 0.000
H7 -0.927 1.671 0.889
H8 -0.927 1.671 -0.889

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.49771.09161.41211.41212.12872.13822.1382
C21.49772.19802.38052.38051.09271.09271.0927
H31.09162.19802.02502.02503.08112.55102.5510
F41.41212.38052.02502.27282.62372.65293.3287
F51.41212.38052.02502.27282.62373.32872.6529
H62.12871.09273.08112.62372.62371.77791.7779
H72.13821.09272.55102.65293.32871.77791.7785
H82.13821.09272.55103.32872.65291.77791.7785

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 109.528 C1 C2 H7 110.287
C1 C2 H8 110.287 C2 C1 H3 115.284
C2 C1 F4 109.751 C2 C1 F5 109.751
H3 C1 F4 107.272 H3 C1 F5 107.272
F4 C1 F5 107.177 H6 C2 H7 108.881
H6 C2 H8 108.881 H7 C2 H8 108.944
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.418      
2 C -0.530      
3 H 0.174      
4 F -0.324      
5 F -0.324      
6 H 0.208      
7 H 0.190      
8 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.403 2.607 0.000 2.638
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.956 0.590 0.000
y 0.590 -22.612 0.000
z 0.000 0.000 -25.657
Traceless
 xyz
x 3.179 0.590 0.000
y 0.590 0.695 0.000
z 0.000 0.000 -3.873
Polar
3z2-r2-7.747
x2-y21.656
xy0.590
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.158 -0.066 0.000
y -0.066 3.244 0.000
z 0.000 0.000 3.405


<r2> (average value of r2) Å2
<r2> 73.884
(<r2>)1/2 8.596