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

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-276.950928
Energy at 298.15K 
HF Energy-276.950928
Nuclear repulsion energy133.651560
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 HF/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' 3298 2977 56.84 23.55 0.29 0.45
2 A' 3275 2956 26.42 121.63 0.43 0.60
3 A' 3207 2895 6.37 103.10 0.02 0.05
4 A' 1614 1457 17.90 14.97 0.74 0.85
5 A' 1591 1436 68.99 2.16 0.46 0.63
6 A' 1526 1378 5.32 0.75 0.75 0.85
7 A' 1280 1155 99.71 2.43 0.43 0.60
8 A' 1248 1126 52.59 5.24 0.57 0.72
9 A' 944 853 10.52 7.07 0.22 0.37
10 A' 613 554 8.35 0.67 0.52 0.69
11 A' 503 454 16.47 0.79 0.55 0.71
12 A" 3288 2968 21.39 57.80 0.75 0.86
13 A" 1617 1459 0.64 9.25 0.75 0.86
14 A" 1547 1396 44.55 9.95 0.75 0.86
15 A" 1294 1168 164.93 2.92 0.75 0.86
16 A" 1066 962 52.05 4.89 0.75 0.86
17 A" 408 368 0.01 0.14 0.75 0.86
18 A" 257 232 0.08 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14287.1 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 12895.6 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 HF/6-31G**
ABC
0.32429 0.30344 0.17590

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.159 0.000
C2 -0.903 1.025 0.000
H3 1.251 0.716 0.000
F4 0.324 -0.640 1.083
F5 0.324 -0.640 -1.083
H6 -1.785 0.397 0.000
H7 -0.913 1.653 0.883
H8 -0.913 1.653 -0.883

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50151.08111.34621.34622.12222.13102.1310
C21.50152.17532.33492.33491.08331.08331.0833
H31.08112.17531.96761.96763.05232.51772.5177
F41.34622.33491.96762.16592.58762.61363.2641
F51.34622.33491.96762.16592.58763.26412.6136
H62.12221.08333.05232.58762.58761.76581.7658
H72.13101.08332.51772.61363.26411.76581.7655
H82.13101.08332.51773.26412.61361.76581.7655

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 109.305 C1 C2 H7 110.011
C1 C2 H8 110.011 C2 C1 H3 113.771
C2 C1 F4 110.038 C2 C1 F5 110.038
H3 C1 F4 107.815 H3 C1 F5 107.815
F4 C1 F5 107.117 H6 C2 H7 109.173
H6 C2 H8 109.173 H7 C2 H8 109.149
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.673      
2 C -0.409      
3 H 0.098      
4 F -0.391      
5 F -0.391      
6 H 0.150      
7 H 0.134      
8 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.293 2.226 0.000 2.245
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.237 0.633 0.000
y 0.633 -22.608 0.000
z 0.000 0.000 -25.076
Traceless
 xyz
x 2.605 0.633 0.000
y 0.633 0.548 0.000
z 0.000 0.000 -3.153
Polar
3z2-r2-6.306
x2-y21.371
xy0.633
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.293 -0.019 0.000
y -0.019 3.239 0.000
z 0.000 0.000 3.255


<r2> (average value of r2) Å2
<r2> 70.819
(<r2>)1/2 8.415