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

using model chemistry: HF/SDD

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/SDD
 hartrees
Energy at 0K-276.924570
Energy at 298.15K 
HF Energy-276.924570
Nuclear repulsion energy130.646034
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/SDD
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' 3391 3053 51.12 63.00 0.15 0.26
2 A' 3338 3005 10.74 69.56 0.71 0.83
3 A' 3237 2914 8.60 144.02 0.02 0.04
4 A' 1632 1469 8.59 13.26 0.75 0.86
5 A' 1590 1431 43.91 1.47 0.45 0.62
6 A' 1519 1368 26.88 2.63 0.65 0.79
7 A' 1272 1145 31.86 5.64 0.37 0.54
8 A' 1216 1095 109.61 6.04 0.68 0.81
9 A' 921 829 25.24 10.06 0.15 0.25
10 A' 573 516 14.94 1.55 0.43 0.60
11 A' 468 422 23.63 1.42 0.69 0.82
12 A" 3333 3001 22.31 52.20 0.75 0.86
13 A" 1636 1473 6.89 12.44 0.75 0.86
14 A" 1497 1348 34.29 6.00 0.75 0.86
15 A" 1250 1125 122.39 5.88 0.75 0.86
16 A" 1017 915 115.34 9.47 0.75 0.86
17 A" 394 355 0.00 0.39 0.75 0.86
18 A" 228 205 0.11 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14254.8 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 12835.0 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 HF/SDD
ABC
0.30589 0.29333 0.16776

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.184 0.000
C2 -0.907 1.047 0.000
H3 1.263 0.710 0.000
F4 0.325 -0.659 1.118
F5 0.325 -0.659 -1.118
H6 -1.790 0.425 0.000
H7 -0.916 1.673 0.881
H8 -0.916 1.673 -0.881

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50471.07511.40031.40032.12902.12952.1295
C21.50472.19612.38362.38361.08051.08111.0811
H31.07512.19612.00092.00093.06632.53992.5399
F41.40032.38362.00092.23612.62672.65273.3134
F51.40032.38362.00092.23612.62673.31342.6527
H62.12901.08053.06632.62672.62671.76101.7610
H72.12951.08112.53992.65273.31341.76101.7628
H82.12951.08112.53993.31342.65271.76101.7628

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 109.786 C1 C2 H7 109.795
C1 C2 H8 109.795 C2 C1 H3 115.696
C2 C1 F4 110.217 C2 C1 F5 110.217
H3 C1 F4 107.126 H3 C1 F5 107.126
F4 C1 F5 105.957 H6 C2 H7 109.106
H6 C2 H8 109.106 H7 C2 H8 109.233
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.471      
2 C -0.564      
3 H 0.179      
4 F -0.358      
5 F -0.358      
6 H 0.227      
7 H 0.201      
8 H 0.201      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.396 3.334 0.000 3.357
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.979 0.822 0.000
y 0.822 -23.402 0.000
z 0.000 0.000 -27.220
Traceless
 xyz
x 4.332 0.822 0.000
y 0.822 0.697 0.000
z 0.000 0.000 -5.029
Polar
3z2-r2-10.058
x2-y22.423
xy0.822
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.827 -0.036 0.000
y -0.036 3.031 0.000
z 0.000 0.000 3.189


<r2> (average value of r2) Å2
<r2> 73.806
(<r2>)1/2 8.591