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

using model chemistry: HF/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-60.961388
Energy at 298.15K 
HF Energy-60.961388
Nuclear repulsion energy75.524831
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/CEP-121G
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' 3324 3033 51.88 51.05 0.09 0.17
2 A' 3291 3003 5.17 87.18 0.65 0.79
3 A' 3185 2906 6.87 133.98 0.02 0.03
4 A' 1619 1477 6.46 12.28 0.75 0.86
5 A' 1580 1442 48.75 1.78 0.51 0.68
6 A' 1509 1377 28.54 2.17 0.74 0.85
7 A' 1263 1153 30.04 3.83 0.28 0.44
8 A' 1212 1106 110.70 6.33 0.70 0.82
9 A' 919 838 25.58 10.03 0.14 0.25
10 A' 572 522 14.61 1.33 0.41 0.58
11 A' 468 427 23.21 1.47 0.69 0.81
12 A" 3287 2999 22.51 54.92 0.75 0.86
13 A" 1621 1479 4.36 11.54 0.75 0.86
14 A" 1492 1361 36.23 7.82 0.75 0.86
15 A" 1241 1133 123.58 4.65 0.75 0.86
16 A" 1015 927 117.73 8.99 0.75 0.86
17 A" 394 359 0.01 0.41 0.75 0.86
18 A" 228 208 0.09 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14109.3 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 12874.7 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/CEP-121G
ABC
0.30538 0.29189 0.16732

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.327 0.185 0.000
C2 -0.914 1.047 0.000
H3 1.268 0.712 0.000
F4 0.327 -0.659 1.118
F5 0.327 -0.659 -1.118
H6 -1.794 0.417 0.000
H7 -0.925 1.674 0.883
H8 -0.925 1.674 -0.883

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51121.07851.40151.40152.13422.13632.1363
C21.51122.20782.38822.38821.08261.08321.0832
H31.07852.20782.00452.00453.07672.55212.5521
F41.40152.38822.00452.23682.62862.65843.3194
F51.40152.38822.00452.23682.62863.31942.6584
H62.13421.08263.07672.62862.62861.76561.7656
H72.13631.08322.55212.65843.31941.76561.7665
H82.13631.08322.55213.31942.65841.76561.7665

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 109.627 C1 C2 H7 109.759
C1 C2 H8 109.759 C2 C1 H3 115.970
C2 C1 F4 110.099 C2 C1 F5 110.099
H3 C1 F4 107.135 H3 C1 F5 107.135
F4 C1 F5 105.879 H6 C2 H7 109.212
H6 C2 H8 109.212 H7 C2 H8 109.255
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.446      
2 C -0.477      
3 H 0.141      
4 F -0.320      
5 F -0.320      
6 H 0.186      
7 H 0.172      
8 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.413 3.291 0.000 3.317
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.013 0.759 0.000
y 0.759 -23.381 0.000
z 0.000 0.000 -27.188
Traceless
 xyz
x 4.272 0.759 0.000
y 0.759 0.720 0.000
z 0.000 0.000 -4.992
Polar
3z2-r2-9.983
x2-y22.368
xy0.759
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.115 -0.009 0.000
y -0.009 3.290 0.000
z 0.000 0.000 3.427


<r2> (average value of r2) Å2
<r2> 62.677
(<r2>)1/2 7.917